As my freind Milgrove can attest to put me infront of logic puzzles one of two things happen: I either laugh at how easy they are or when I hit with the more abstract ones he can swear he can smell my brain cells burring to the point that I'm running around like Dexter with my hair on fire !

well I came across a site:
http://www.survivalcode.com/

Dispite it being a ploy to sell gum has some nice brain twisters to wrap you head around. One of them being a nice mix of music and physics and some sudoku like glyph puzzles as well.

http://www.survivalcode.com/

Hope you like.