Copy from and Paste to Native OS X Clipboard in Vim
I was annoyed that the builtin OSX vim version on Snow Leopard could not copy to the clipboard. I grabbed this homebrew formula http://github.com/adamv/homebrew/blob/duplicates/Library/Formula/vim.rb and recompiled vim with it. I had to move the existing vim out of way for some reason and then I had a shiny new vim with clipboard support. Just "set clipboard=unnamed" in your .vimrc file.