Examples

• mcandre's vimrc, with g:vundle_default_git_proto set to 'git', for BusyBox / Android compatibility.
• gmarik's vimrc
• mutewinter's Vim Config of Champions
• vimified - Ultimate, kick-ass VIM configuration on top of Vundle
• ivim - Vim Distribution of Xiao-Ou Zhang Using Vundle
• aaronjensen's Vim Config with simple setup script
• fisa-vim-config - lot of python, autocompletition, fuzzy finder, class browser, debugger, ...
• moshen's vim config - relatively simple vundle config with a more robust setup script
• dd-vim DD Vim Configuration - a good starting point to make your own Vim configuration
• dotvim - Drop in vim configuration
• Sibin's vimrc - Uses the environment variable $VIM, making it more portable. The other examples (i.e. above) weren't working on the Windows machine I use.
• timss' vimconf - Extensive vimrc with easy install and -everything- in the vimrc is explained!
• Auto Installing Vundle From Your Vimrc
• spf13-vim
• yann2192's vimrc - Special config for python and go.
• Rory O’Kane’s vimrc
• nickaigi's vimrc - Beginners vimrc, heavily biased for python development
• martyn/.vim - A dvorak-based vim layout. Includes plugins for ruby, clojure, go, and others.
• lucascaton/vimfiles - Plugins for Rails, Javascript and other things.
• justincampbell/.dotfiles

If you have an interesting example, feel free to add a link to your config.