Supergroups have a funny way of not living up to their potential. Often the problem is that one member of the ensemble just doesn't seem to fit. Case in point, here's the how 2009's short-lived indie group Tinted Windows was constructed: a Smashing Pumpkins guitarist, a Cheap Trick drummer, a bassist/singer from Fountains of Wayne and...the middle brother from the pop-trio Hanson.
Hopefully this isn't the scenario that Michael Cera is set up for as he joins newly formed band Mister Heavenly. As reported by Pitchfork media, the band will comprise members of Modest Mouse, Islands and Man Man and, of course, the shyer half of the Superbad duo. Cera, as The Guardian's Sean Michael's notes, does have considerable experience playing in poorly named fictional bands Sex Bob-omb (in Scott Pilgrim) and the Jerk-offs (in Nick and Norah's Infinite Playlist).
So, just maybe, this could work. Although a far more entertaining—and completely fictional—supergroup would feature Cera and Modest Mouse's Isaac Brock sharing vocal duties.