If you try telling a Star Wars fan that there's another actor out there who could've pulled off Han Solo better than Harrison Ford, you're just asking for problems. The man is considered the best part of the franchise by many and is credited as being one of the main reasons the series was so successful in the first place.
The very idea of someone else playing the role seems like sacrilege or absurdity at the very least.
So Conan decided to not only acknowledge this absurdity but totally run with it and have people who would be totally miscast as Han Solo audition for the part. And it was downright hilarious.
Did you ever want to see 50 Cent's interpretation of the best hustler in the galaxy? What about Melissa McCarthy or Jeff Goldblum?
Who do you think gave the best audition? My money's on Goldblum, he always crushes it.