Following a link from vitunes (which has been updated), I see vimprobable, a vi-ish web browser. Interesting both for its relentless focus on keyboard controls, and for its old-style quietly angry help (from the FAQ):
How will I know if a website is genuine without a phishing filter?
Use your brain.
Also along the same lines, vimperator.
Don’t forget games! :D
http://wordwarvi.sourceforge.net/
oh and there are also many rogue likes featuring vi keys.