Flick of the Wrist (brilliant track, by the way) was the B side to Killer Queen; the B-side to the original release of Bohemian Rhapsody was 'I'm in Love With my Car' (sung by drummer Roger Taylor).
B-side to 'Who Wants the World?'
https://www.youtube.com/watch?v=lQwFmr7I2N0
B-Side to 'Silver Machine'
https://www.youtube.com/watch?v=r6gdoM5cHdA
B-side to 'Nobody's Twisting Your Arm'
https://www.youtube.com/watch?v=-VwlxI17qiA
B-side to 'Amateur Hour'...