[Atlas Sneezed]

Billy Wilder directed Some like it Hot, in which appeared...

George Raft, who also appeared in Casino Royale with...

Peter Sellers, who appeared in Alice's Adventures in Wonderland with...

Dudley Moore, who appeared in Wholly Moses with...

Dom DeLuise, who appeared in The Muppet Movie with...

Milton Berle, who appeared in Let's Make Love! with...

Marilyn Monroe, who starred in Some Like It Hot which was directed by...

Billy Wilder!

Can anyone go full circle by using less than the four other people I used?

[billsux]

It's probably cheating but Berle and Wilder were both mentioned in AFI's 100 Years, 100 Laughs: America's Funniest Movies (2000) and Berle and Moore were both on the Muppet Show fairly often (tho never together). So, I guess, sort of, Wilder --> Berle --> Kermit --> Moore... But, again, pretty thin (via a documentary and variety show).

Actually you can shrink your own list by one... Billy Wilder had a connection to Casino Royale himself (you can remove Raft from your list). Check this out... IMDB. Which effectively shrinks it as low as you can get it since none of them have any direct connections (at least none I was able to find, other than the flimsy ones I mentioned earlier).