interactive things i can add to profile?

is there any "interactive" html things i can add to my profile that anyone knows of? i tried adding a chatbox, a poll, and a profile hit counter and when i put it in about me it like deleted half of the code so i guess they weren't compatible? i tried adding the code for the pocket emo game lol but that's ancient so i didn't expect it to work anyway.

anyone know of any chat or game type items i could add?