> I discovered a nifty completion shortcut in emacs today. When typing a
> word, if you hit Esc+/ it will complete the word.
>
> My question is: Can this shortcut be accomplished in vim/gvim?

You can use abbr in your .vimrc for word completion. For e.g., if you have

abbr pr printf

in your .vimrc and type pr followed by a space, the corresponding word is
printed. CTRL+n also achieves something similar. Check out
http://www.vim.org/tips/tip.php?tip_id=4

HTH,
--ravi