Yes, I find their music (especially David Gilmour's influence) to really influence a part of my own guitar playing, as well as my overall composing. In fact, as far as the overall Pink Floyd influence goes, I typically have to restrain myself when it comes to spacey keyboards, whether to or not to use them in a song.
As a result I don't end up using them much, but I know if I had no restraint I'd have at least one keyboard on every song I'm writing, unless there's only one instrument in the song (like a solo piano sonata... actually, that could still be considered a keyboard...)
Right now I only have Meddle, Dark Side of the Moon, and The Wall, unfortunately. I have more on my ever-growing to-get list...