I like everything Bee Gees. All the songs, at least the ones I know of, and there are so many.
Their DVD "One Night Only" is just magical. All the songs are hits, and they did not have time to sing the full length version of some, just gave us a medley. I have watched that one probably 100 times.
Anyone has it too?
The funny thing is that they wrote hits for other singers, and when they sang the songs themselves, the songs even sounded better. Like:
Islands in the Stream - Kenny Rogers and Dolly Parton
Guilty - Barbra Streisand
Heartbreaker - Dionne Warwick
Immortality - Celine Dion
I adore, adore, adore the Bee Gees.

Yes, I agree, there is nothing like the three of them singing together.
But Robin does have some nice solo songs like Juliet and Love Hurts. He sings A Lover's Prayer (a Bee Gees song) very nicely too. Got his DVD Live in Frankfurt.