vim-taglist

Source code browser (supports C/C++, java, perl, python, tcl, sql, php, etc) http://www.vim.org/scripts/script.php?script_id=273

vim-smart-selection

smart selection is a plugin for users to select a block of codes according to the syntax (for C family languages)

vim-utf8

Convenient TeX-ish Unicode shorthand with *.utf8 files