I've put Bohemian Rhapsody on the top of my "favorite songs ever" list more than once, and I also enjoy Bohemian Polka
... but I'm a pretty die-hard fan of Weird Al, so I recognize that my opinion may not be the norm.
But in terms of good Queen covers, I believe the King's Singers' cover of Seaside Rendezvous
is pretty good, too. (It's the song I use to get other songs out of my head, because it's complex and has a clear ending.)