[seri]

I use FuzzyFinder (http://www.vim.org/scripts/script.php?script_id=1984) instead of Command-T, and I would also add:

Endwise: https://github.com/tpope/vim-endwise, Matchit: https://github.com/tsaleh/vim-matchit, NerdTree: https://github.com/scrooloose/nerdtree, Surround: https://github.com/tpope/vim-surround, Snipmate: https://github.com/msanders/snipmate.vim (compulsory)

[gaving]

I'd recommend trying Ultisnips instead (of the now abandoned) snipmate: http://fueledbylemons.com/blog/2011/07/27/why-ultisnips/

I realise there is a fork going, but Ultisnips is providing a ton more features and seems a lot nicer in many aspects.

[mnazim]

EndWise: When I start any serious ruby programming. MatchIt: Already using it. Snipmate: I don't like snippets. I could never get used to them.