It would be nice if people would post their favourite on-line flash/java games;
only I can't post mine here as it appears else where on this forum (hint: it's in a subject header with the word "retrogamers" in it) and I don't want to be known as a cross-poster or spammer. If you find it, it will take you to an all-time classic arcade game featuring an early outing for an Italian plumber known as Jumpman in this game.
Or how about this one:
http://www.arcadetown.com/camperstrike/index.asp It's supposed to be really popular, and no it's not counter-strike.