Loved, loved it, loved it! Fortunately, Greta Christina saved me the effort of writing a review:
http://gretachristina.typepad.com/greta_christinas_weblog/2006/10/shortbus_my_com.html Greta's review is what caused me to rent the movie in the first place, and it was very interesting to re-read it now, after I saw the film. She noted many things that I missed; although, at times, I had the feeling that these insights come from Greta, and not from the film itself… But that is one of the features of a good film!
One minor issue I have with this film is that it's a bit too heavy on happy endings: it has the musical-style climactic one-big-happy-ending for all its story-lines, with a background song. I cared for the characters and wished them all well, but sometimes a happy ending is just not very likely… With the rest of the film being mostly realistic and serious, this was just unfitting. I mean, I was happy for all of them, but still… the stalker guy landing the biggest stalker jackpot? Come on!
Some other minor points on which I disagree with Greta:
"And there's Severin[…] a woman with perceptive and profound insight into other people's lives and problems"
Huh? In her own eyes, maybe… I agreed with Sofia on this one - I thought Severin mostly didn't know what the f$%k she was talking about (which is to be expected, given her knack of jumping to conclusions and unwillingness to ever reconsider them).
"[…] who keeps pressing her with nosy questions that seem profound and probing on the surface but are actually glib and meaningless"
A minor point: questions like those are not, by nature, glib or profound - it all depends on the intentions of the people involved - the person who asks the question and the one who answers it. They could turn into serious conversations, and they could be just nosy and annoying. In this instance, I agree with Greta - they were not meant to start a serious conversation, which is why they were annoying and meaningless. But in a different situation, they might not be.
Greta's description of the scene where Sofia flips out and yells at Rob, then goes on to smash the egg into pieces: Greta's retelling is much better then the scene itself, which was grossly overdone for comic effect, imho.
But overall, I'm glad I saw this film, it was unique and refreshing in many ways. I'm only sorry I can't show it to my parents… :-)