Group A looks the weakest of the lot. Porto and PSG will get through that one.
Group B looks semi good, Arsenal will get through, Schalke probably won't be able to hold off Montpellier to be honest. Also, Giroud against his old club!
Group C looks like a good one, Milan will get through, Malaga could scrape through ahead of Zenit.
Group D is absolute hell, and that's great for me because Man City stand a chance of not making it!

Real Madrid will be group winners, but Man City will have their doubts being put against the Dutch and German champions as well. Incidentally, 4 champions in that group.
Group E looks like a strong one, Chelsea and Juventus should be going through but if they cancel each other out well enough Donetsk might be able to creep in ahead of one of them. Poor Nordsjaelland are going to be blown away.
Group F looks fairly nasty overall, but I don't expect too much else than a Bayern-Valencia 1-2. Lille might well challenge Valencia though.
Group G seems OK but Barca will walk it. Might end up getting the full 18 points from that. Benfica have some class actually but Spartak are far more of a threat than most give them credit for, trust me. Celtic might be able to make something of a splash but they aren't making it out. Also, McGeady against his former club...
Group H, as a Man U fan I couldn't have asked for much better. Three relatively weak teams that we should be able to brush aside. Probably will end up with 16 points. I say that of course when last year we had a Portuguese and Romanian team in the groups too...course Galatasaray are the odd one out but, y'know.