I'll give you Human Nature, but everything in Series 4 besides Silence in the Library/Forest of the Dead was mediocre to me. More and more I revist SitL/FotD that show really was the prologue for the Moffat era. Fear factor turned up to 11, River Song's debut, and it really was the first time The Doctor just used his reputation to get by. When he says "I'm the Doctor, and you're in the biggest library in the Universe. Look me up" and the Vashtu Nerada just hightail it was way out of character at the time but makes sense now.
On another note, I hope the show isn't going into limbo or another "Specials" year in 2012. The BBC has said only 6-7 episodes are going to air in 2012. I hope its only because of the 2012 Olympics in London. It would be a shame for 2013 (50th anniversary) to pass without a big payoff.