Syd Barrett - The Madcap Laughs & Barrett
Roger Waters & Ron Geesin - Music From The Body (arguably more Geesin's baby than Waters')
Nick Mason's Fictitious Sports (humorous Carla Bley songs sung by Robert Wyatt - a gem!)
Not too bothered about the rest of the Floydian solo oeuvre, myself, though I can't claim to be familiar with all of it.