Yeah, I guess I never really thought about it too much before until you brought it up. Beau has been somewhat missing for a while. I have seen him once in a while but he doesn't say much. The thing about Beau, for me, is that even though I love him and I always think whatever comes out of his mouth is hilarious, I wouldn't mind to much if he had little to say. As long as he is there. He never had a whole lot to say, but we always enjoyed seeing his presence. Here is how I would have thrown him into some of the movie where he is missing...
Muppet Christmas Carol--I like the idea of him working in the accounting shop with Kermit and the Rats as a janitor. I think it would add a nice dynamic to the opening scenes and the closing up the shop song.
Treasure Island--working on the ship, mopping the deck, but he wouldn't become a pirate. He would end up being on the good side (this would probably give him more lines too).
Muppet Wizard of Oz--helping load the bus at the beginning instead of Bean. Then if I had to use Bean, I would throw him into the Oz forest somewhere randomly. He wouldn't do much, just have a very very short cameo.