I got a few, really hard to pick one for me, because they tried so many different sounds:
"My Melancholy Blues", from
News of the World
"Good Old Fashioned Lover Boy", from
A Day at the Races
"Don't Stop Me Now", from
Jazz
"You're My Best Friend", from
A Night at the Opera
"Save Me", from
The Game
Plus the live versions of "Play the Game" and "Somebody to Love", off their
Queen on Fire: Live at the Bowl record. That's my favorite Queen live record, even though it was from their, ugh, Hot Space tour.
And "
BOHEMIAN RHAPSODY"