diff --git a/lib/aliases.zsh b/lib/aliases.zsh
index 80760a1f5..d2d3aed81 100644
--- a/lib/aliases.zsh
+++ b/lib/aliases.zsh
@@ -3,7 +3,6 @@ alias pu='pushd'
 alias po='popd'
 
 # Basic directory operations
-alias .='pwd'
 alias ...='cd ../..'
 alias -- -='cd -'
 
diff --git a/plugins/brew.plugin.zsh b/plugins/brew.plugin.zsh
index 91397bf3a..162eb6442 100644
--- a/plugins/brew.plugin.zsh
+++ b/plugins/brew.plugin.zsh
@@ -1,6 +1,6 @@
 #compdef brew
 
-# copied from _fink
+# imported from the latest homebrew contributions
 
 _brew_all_formulae() {
   formulae=(`brew search`)
@@ -12,19 +12,25 @@ _brew_installed_formulae() {
 
 local -a _1st_arguments
 _1st_arguments=(
-  'install:install a formula'
-  'remove:remove a formula'
-  'search:search for a formula (/regex/ or string)'
-  'list:list files in a formula or not-installed formulae'
-  'link:link a formula'
-  'unlink:unlink a formula'
+  'cat:display formula file for a formula'
+  'cleanup:uninstall unused and old versions of packages'
+  'create:create a new formula'
+  'deps:list dependencies and dependants of a formula'
+  'doctor:audits your installation for common issues'
+  'edit:edit a formula'
   'home:visit the homepage of a formula or the brew project'
   'info:information about a formula'
-  'prune:remove dead links'
-  'update:freshen up links'
+  'install:install a formula'
+  'link:link a formula'
+  'list:list files in a formula or not-installed formulae'
   'log:git commit log for a formula'
-  'create:create a new formula'
-  'edit:edit a formula'
+  'outdated:list formulas for which a newer version is available'
+  'prune:remove dead links'
+  'remove:remove a formula'
+  'search:search for a formula (/regex/ or string)'
+  'unlink:unlink a formula'
+  'update:freshen up links'
+  'uses:show formulas which depend on a formula'
 )
 
 local expl
@@ -47,12 +53,12 @@ case "$words[1]" in
     _arguments \
       '(--unbrewed)--unbrewed[files in brew --prefix not controlled by brew]' \
       '1: :->forms' &&  return 0
-      
+
       if [[ "$state" == forms ]]; then
         _brew_installed_formulae
         _requested installed_formulae expl 'installed formulae' compadd -a installed_formulae
       fi ;;
-  install|home|log|info)
+  install|home|log|info|uses|cat|deps)
     _brew_all_formulae
     _wanted formulae expl 'all formulae' compadd -a formulae ;;
   remove|edit|xo)
diff --git a/themes/candy.zsh-theme b/themes/candy.zsh-theme
new file mode 100644
index 000000000..bc125c5ce
--- /dev/null
+++ b/themes/candy.zsh-theme
@@ -0,0 +1,7 @@
+PROMPT=$'%{$fg_bold[green]%}%n@%m %{$fg[blue]%}%D{[%I:%M:%S]} %{$reset_color%}%{$fg[white]%}[%~]%{$reset_color%} $(git_prompt_info)\
+%{$fg[blue]%}->%{$fg_bold[blue]%} %#%{$reset_color%} '
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[green]%}["
+ZSH_THEME_GIT_PROMPT_SUFFIX="]%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_DIRTY=" %{$fg[red]%}*%{$fg[green]%}"
+ZSH_THEME_GIT_PROMPT_CLEAN=""
diff --git a/themes/fletcherm.zsh-theme b/themes/fletcherm.zsh-theme
new file mode 100644
index 000000000..e96188544
--- /dev/null
+++ b/themes/fletcherm.zsh-theme
@@ -0,0 +1,12 @@
+# Copied from old version of tonotdo's theme. LSCOLORS modified.
+PROMPT='%{$fg_no_bold[cyan]%}%n%{$fg_no_bold[magenta]%}•%{$fg_no_bold[green]%}%3~$(git_prompt_info)%{$reset_color%}» '
+RPROMPT='[%*]'
+
+# git theming
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg_bold[blue]%}(%{$fg_no_bold[red]%}"
+ZSH_THEME_GIT_PROMPT_SUFFIX=""
+ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg_bold[blue]%})"
+ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg_bold[yellow]%}⚡%{$fg_bold[blue]%})"
+
+export LSCOLORS="exfxcxdxbxegedabagacad"
+export LS_COLORS='no=00:fi=00:di=01;34:ln=00;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=41;33;01:ex=00;32:*.cmd=00;32:*.exe=01;32:*.com=01;32:*.bat=01;32:*.btm=01;32:*.dll=01;32:*.tar=00;31:*.tbz=00;31:*.tgz=00;31:*.rpm=00;31:*.deb=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.lzma=00;31:*.zip=00;31:*.zoo=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.tb2=00;31:*.tz2=00;31:*.tbz2=00;31:*.avi=01;35:*.bmp=01;35:*.fli=01;35:*.gif=01;35:*.jpg=01;35:*.jpeg=01;35:*.mng=01;35:*.mov=01;35:*.mpg=01;35:*.pcx=01;35:*.pbm=01;35:*.pgm=01;35:*.png=01;35:*.ppm=01;35:*.tga=01;35:*.tif=01;35:*.xbm=01;35:*.xpm=01;35:*.dl=01;35:*.gl=01;35:*.wmv=01;35:*.aiff=00;32:*.au=00;32:*.mid=00;32:*.mp3=00;32:*.ogg=00;32:*.voc=00;32:*.wav=00;32:'
diff --git a/themes/josh.zsh-theme b/themes/josh.zsh-theme
new file mode 100644
index 000000000..6bed1a70e
--- /dev/null
+++ b/themes/josh.zsh-theme
@@ -0,0 +1,43 @@
+grey='\e[0;90m'
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$grey%}("
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_DIRTY="%{$grey%}) %{$fg[yellow]%}✗%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_CLEAN="%{$grey%})"
+
+function josh_prompt {
+  (( spare_width = ${COLUMNS} ))
+  prompt=" "
+
+  branch=$(current_branch)
+  ruby_version=$(rvm_prompt_info)
+  path_size=${#PWD}
+  branch_size=${#branch}
+  ruby_size=${#ruby_version}
+  user_machine_size=${#${(%):-%n@%m-}}
+  
+  if [[ ${#branch} -eq 0 ]]
+    then (( ruby_size = ruby_size + 1 ))
+  else
+    (( branch_size = branch_size + 4 ))
+    if [[ -n $(git status -s 2> /dev/null) ]]; then
+      (( branch_size = branch_size + 2 ))
+    fi
+  fi
+  
+  (( spare_width = ${spare_width} - (${user_machine_size} + ${path_size} + ${branch_size} + ${ruby_size}) ))
+
+  while [ ${#prompt} -lt $spare_width ]; do
+    prompt=" $prompt"
+  done
+  
+  prompt="%{%F{green}%}$PWD$prompt%{%F{red}%}$(rvm_prompt_info)%{$reset_color%} $(git_prompt_info)"
+  
+  echo $prompt
+}
+
+setopt prompt_subst
+
+PROMPT='
+%n@%m $(josh_prompt)
+%(?,%{%F{green}%},%{%F{red}%})⚡%{$reset_color%} '
diff --git a/themes/mrtazz.zsh-theme b/themes/mrtazz.zsh-theme
new file mode 100644
index 000000000..214ba5a47
--- /dev/null
+++ b/themes/mrtazz.zsh-theme
@@ -0,0 +1,7 @@
+PROMPT='%{$fg_bold[red]%}%m%{$reset_color%}:%{$fg[cyan]%}%c%{$reset_color%}:%# '
+RPROMPT='%{$fg_bold[green]%}$(git_prompt_info)%{$reset_color%}% '
+
+ZSH_THEME_GIT_PROMPT_PREFIX="<%{$fg[red]%}"
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[green]%} %{$fg[yellow]%}✗%{$fg[green]%}>%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg[green]%}>"
diff --git a/tools/install.sh b/tools/install.sh
index 004b252f4..6e3872bb9 100755
--- a/tools/install.sh
+++ b/tools/install.sh
@@ -22,7 +22,7 @@ echo "Copying your current PATH and adding it to the end of ~/.zshrc for you."
 echo "export PATH=$PATH" >> ~/.zshrc
 
 echo "Time to change your default shell to zsh!"
-chsh -s /bin/zsh
+chsh -s "/usr/bin/env zsh"
 
 echo '         __                                     __  '
 echo '  ____  / /_     ____ ___  __  __   ____  _____/ /_ '
@@ -32,5 +32,5 @@ echo '\____/_/ /_/  /_/ /_/ /_/\__, /    /___/____/_/ /_/  '
 echo '                        /____/'
 
 echo "\n\n ....is now installed."
-/bin/zsh
+/usr/bin/env zsh
 source ~/.zshrc