Now that I just became a member of the group, I would like to open the floor to discuss what you fellow Chuggaa do Let's Plays of.
Emile seems to like RPGs, and given his love for the Mario series, I feel the Mario & Luigi trilogy (or at least Superstar Saga) would be perfect for him. It's a great game with a great story. He enjoys a good laugh as much as he enjoys making others laugh, and given the humor present in all three games, I don't see why he hasn't played it already.
I don't know if this would be Chuggaa's type of game or not, but I'd like to see him try Metroid Prime. I liked the trilogy, but honestly, I find it more enjoyable to watch someone play the trilogy than to play the games myself.
Emile has said he has given thought to playing a Sonic game. He likes to give games a chance that get a bad rap that he thinks don't deserve it, are unpopular, or are just not well known. I pretty much grew up with the Sonic series myself, so some games I think are worth his time include Sonic CD, Knuckles Chaotix, Sonic 3D Blast, and maybe Sonic Spinball, Sonic Heroes, or Shadow the Hedgehog. All of these except for the last two come from Sonic's early days, and given how fast-paced the games are, his commentary might be a bit rushed, which makes me wonder how popular they would be. Plus, I imagine most of those LPs would be even shorter than Pikmin or Luigi's Mansion.