I never owned a dreamcast or saturn, but I have fond memories as a child playing Sonic 3 & Knuckles on my Genesis. I also enjoyed the heck out of Fun & Games because I didn't have Mario Paint at the time and it's kind of similar.
I definitely noticed that GoNintendo is using the same song as you guys and I commented on one of the podcast posts. I thought it was funny because the only two podcasts I listen to (TalkRadar and GoNintendo) are using the same opening song. I wouldn't mind hearing a new TalkRadar opening song, but I don't think you should change it because of them.
Definitely Metallica! I had heard of but did not listen to Metallica before Guitar Hero: Metallica came out so I didn't really have an interest in the game, but I rented it because I love Guitar Hero and ended up really liking their music.
I'm pretty sure it was in the cheesiest game songs article. If it wasn't in the article itself, they definitely played it on the podcast when talking about it.
I remember that horrible tutorial from Driver! I couldn't beat it for the life of me and had to use a gameshark to bypass the level so I could actually play the game!