I feel the same way about the Flaming Lips. I want to like all of their material but I only can enjoy a handful of songs from their early 90's era. Their best albums are In A Priest Driven Ambulance, Hit to Death On Future Head, Transmissions from the Satellite Heart, and Clouds Taste Metallic.

As for songs, Sam, check out:

God Walks Among Us Now
She Don't Use Jelly
Lucifer Rising
Five-Stop Mother Superior Rain
Psychiatric Exploration of the Fetus With Needles