Dell VP, Atrix, iPad (of course) and TouchPad, no microSD's.

N900, N810, yes... microSD's - didn't use the N900's microSD at all though, didn't have to - just used it once to possibly transfer something, but found out it wouldn't work before I transferred it (DRM media)

Lately, I've been moving stuff to my Xoom via ssh or http and then moving to the microSD. And even then, it has 32gb of internal storage; compounded with the 32gb of microSD - and I'm still using only 8gb of total storage combined. No joke.