If you don't mind it being free, I quite like Titillium as a Klavika alternative: http://www.campivisivi.net/archivio/_titillium/titillium2010/index.html

Web sites such as MyFonts and Identifont will show you “similar to” typefaces.

For something squarish, with some warmth, and relatively recent check out Akko.

What is the logic of using something "similar" to something you think is "overused"? Wouldn't it make more sense to go with a different style instead of trying to match letterforms?

This older thread has a number of suggestions.

Jackson, I'd start a new thread with that interesting point.

hhp

Well..it's a the right kind of typeface for the project, BUT specifically, Klavika is rather recognisable and having something similar (but distinct) is extremely useful here..

Also check out http://Neo Sans and http://Soho Gothic, both from Seb Lester.

This one? ;)