The Qwyzzle100 challenge

[Strolen]

Solve all 100 puzzles and enter the hall of fame!

http://home.planet.nl/~Qwyzzle/Qwyzzle100.html

Wife showed this to me and called me whenever she got stumped. She is currently on puzzle 17 I think. Some of them are simply crazy so far, can't imagine how they will be 50 puzzles from what we are on.

[Strolen]

And, if that one gets to easy (frustrating) then you can get quadrupely frustrated at this one

http://www.cleverwasteoftime.com/levels/levelone.htm

(for the more tech savvy as it has you changing urls, viewing source code, etc)