I'm starting to think the only reason we are getting this season instead of it being wrapped up last year is that Jason Segel agreed to one more year so long as he didn't have to be on the show anywhere near as much.
I thought that before the season even started.
His total non-inclusion in any of these first four episodes in scenes with the rest of the cast pretty much nails that point home.
I'd like to say I can't blame him (he was pretty insistent) but you'd also like a guy to be dedicated to his role. For example, Zach Galifinakis absolutely
didn't want to do a Hangover III (didn't really want to do part II, either), but not only did he end up doing the film he was the only cast member to not mail it in.