Both Be Here Now and the song "Roll With It" for Noel Gallagher.
And the band name 'Oasis' for Liam Gallagher, who also refuses to play Oasis songs with Beady Eye. They got over this long enough enough to sing "Wonderwall" at the closing ceremonies for the 2012 London Summer Olympic Games.
Later, Noel finally disowned Standing on the Shoulder of Giants, conventionally seen as their lowest point, as a mistake, saying he wasn't on his best shape and "just wrote songs for the sake of making an album."
When making (What's The Story) Morning Glory?, Noel presented Liam with two songs and told him to pick one to sing, and he would sing the other one himself. The songs? "Wonderwall" and "Don't Look Back In Anger". Imagine how the latter would sound with Liam's vocals...
Dig Out Your Soul was mostly credited as a return to form for the band... and then they broke up.