Even though I think The Simpsons has been on the decline for this last season
Yeah, I know. But there have been worse seasons. After fourteen seasons, it's almost expected to be in a slump by now.
But at least they picked Al and not some trendy guest star that would make someone watching it ten years from now go, "Who?"
And speaking of Simpsons-related things, there's a poll (
http://www.sonypictures.com/cthe/tv/poll/tvpoll2.php) going on by Sony's home entertainment division to see what kind of interest there is in their TV shows. You can vote for five, so I strongly recommend everyone vote for "The Critic."

And there are some shows listed that Al has appeared on, such as "V.I.P." and "Parker Lewis."