The last time I spoke to John Flansburgh of They Might Be Giants, it was about the group's science album for kids. This time we talked about the whole TMBG phenomenon: their beginnings and ultimate success, aesthetic aims, being taken seriously while also goofing around, and Sleestaks. TMBG turns 30 this year and is about to launch a national tour with some retrospective elements. So this seemed like a good time to look back on their singular career.