First one - that real life IRC where they all sit in a room and pretend it's an IRC channel.
Second one - dude in the states who dressed himself up in that pretty much bulletproof suit and used a home made flamethrower to cause havoc.
Ta.
(*And if any of you know it's location, the one where the guy is chatting some girl up on the net then she confesses to being male and in love with him and then it turns out they're both roommates.)