I really love hearing Dean Martin sing Marshmallow World. That's one of my favorite holiday songs. Here are two clips of Dino singing this song. The first one is Dean Martin on a Bob Hope Christmas special. I would definitely love to have a place like that decorated up for the holiday season. The other one is from The Dean Martin Variety Show. It's a duet between Dino and Frank Sinatra. I dig both versions of this song. I hope you enjoy them too.