GameSpot recently interviewed Mike Dirnt about Rock Band, video games, the musical, and other things. It is a really great interview. Mike provides some insight on why certain tracks are and aren't on Green Day: Rock Band. He also talks a little about getting 1039/Smooth and Kerplunk as DLC in the Rock Band Store.

[quote]There's something to be said about an album having a representation of that period of time. It's pretty cool. I explained earlier why we couldn't get the earlier ones. And quite honestly, for a video game, I think we skipped through a couple years where maybe later on we'll go back and we'll do like, Green Day: The Fat Years, or something. They probably weren't the most visually exciting years of our life. So who knows? The songs in and of themselves will be represented eventually. The cool thing is that you can keep adding to it.[/quote]

The full interview can be read by clicking here.