I'd have to say my favorite David Gilmour solos are
3. Hey You
2. Money
1. The Fletcher Memorial Home

Gilmour is one of the greatest ever to pick up the 6 string thing, Acknowledge it!
Personally I love the solo in "Mother". It isn't technically challenging or anything but it is a great example of what makes David Gilmour so good, he has more emotion in his playing than anyone else. And his Sax solo on "Red Sky at Night" off his new solo album is amazing.
"Your just a monkey in a monkey suit, aww yeah!"-Piebald "Long Nights"
Comfortably Numb, Time, and Mother.

And yes, this should be in the only pink floyd thread.
<Han> I love Hitler