I've see the Monty Hall Special and it's notable only for having Monty Hall. I couldn't sit through more than the first 10-12 minutes before I started fast forwarding. Didn't Monty have a guaranteed number of primetime specials for ABC, as part of the move from NBC?
Adam Nedeff would know the definitive answer to this, but I just took a brief scan through Monty's book, and it doesn't look like prime time specials were part of the move - running
Let's Make a Deal at night was (the best NBC would give Hatos-Hall was 13 weeks at night, ABC made it a regular series), plus ownership of the show tapes.
I remember reading someplace - possibly from Adam - that Monty did want to do some sort of talk/variety thing in the 1970s, but after trying it decided it wasn't something he wanted to do after all.