I just found out Without You -- made famous by Harry Nilsson (and later Mariah Carey, but Harry's is better) -- was written by Pete Ham and Tom Evans of Badfinger. And now I feel weird.
Badfinger: It was such an honor to have Paul McCartney write a song for us. He is truly a one of a kind talent and we were so grateful and excited to have him producing us. It was like Christmas!
Paul McCartney: dumdumDAHdumdumdumDAHandIkindaknewhowitworkedyouknowlikePIANOdumdumdumdumBASSdumdumdumdumifyouwantithereitisHARMONYcomeandgetit