Violent

Stickdeath - It's exactly as it sounds.  Stick figures die.  They die, in horrible, bloody deaths.  Here is  the opening warning, straight off the website:  "This warning is really stupid, but I figured I would post it to keep the whining at a minimum.  Please do not enter if you are offended by stick people being killed in a funny manner.  You might want to take a pass if your brain does not work correctly and you can not distinguish between an animation and reality."  Deep.  Contains violence and harsh language.

Killfrog - First off, no frogs were harmed in the making of this website.  Mostly cartoons, but has a few games.  Violence, language, all that and a bag of chips.

Circus X - Shockwave games and cartoons.  Blood, guts, language, you name it.

Bunny Grenade - Not as violent as the others, but I figure that any site that has a warning on the intro page must be at least partially violent.  Warning:  Do not submerge your computer in bathwater while viewing this site.

Mohsye - This one is borderline.  While it is extremely violent, the intro page has a link to another page called "Mohsye Kids,"  which is, of course, for the kids.

Nonviolent

Shockwave.com - Shockwave games, movies, and assorted fun stuff.  I recommend the game "Inklink."  It is like an online version of Pictionary, and is extremely fun.   If you play it, E-Mail me for my Inklink screen name.

Cartoon Network Games - Fun from your pals at Cartoon Network.  A must see (It has Powerpuff Girls stuff).

Java Fun - Fun Java.  Java Fun.  Any way you say it, it means java fun.  Lots of JavaScript games here.

Tetris - This is Tetris.  Not much more to say.