Just a friendly reminder
 

I found this on some tutorial website about poly's and I thought it'd be a nice way to remember this stuff :D

triangles are good if you are modeling for a game. Game engines love tris.

yeah I've noticed that before...

in this game I was playing a while ago, there was a cheat (or a hack) that you can turn the game into wireframe mode and everything was triangles.... (the game was Dungeon Siege)

-Emo

That's because graphics boards pipelines only manage triangle geometry.

I'm talking about "normal" boards, not workstation ones.

lol i wouldnt agree with that compleatly, pentagons are quite cool for subdivision, (thats pentagons not 5 sided)

the game engine will triangulate your model no matter how you've constructed it. It's usually a good idea to do it yourself in order to have control over how the edges are turned.

Why are five sided faces bad? I've modeled characters that have n faces and they smoothed alright.

Actually that is something you don´t want. They might smooth alright (at times) but they won´t deform well at an animation stage.