Absolutely, KevH slapped my wrist about 10 years ago and told me to always play my b-sides
Still getting round to it, I'm going through my collection, playing both sides and recording them to iTunes (where the b-side is good enough ) only up to G at the moment but got loads of examples I could list.
Probably the worst example I can think of is that I had a copy of Jimmy Mack (only a soul galore pressing) for 30 years and never played Go On……….