I have this on my 8gb 2nd Gen. It might help....
Songs: 115 (just one playlist basically)
Videos: 36, includes 2 movies, 5 TV episodes, and the rest are iTunes U stuff i added last night
Apps: 150, no real huge ones - but honestly, i've never checked that aspect
Photos: 43 low res
I still have 52.6mb available.
ETA: I have 2 "big" games on there - Monkey Island at 351.5mb and G-Force:Mooch Fly at 133.4, then it drops to Civilization Lite at 75.7mb. 10gb for apps is VERY generous in looking at my list sorted this way.