I already had my MS Exchange email setup in the Mail app prior to upgrading to iOS 5 and when I went into the Reminder app, I saw all of my tasks from Exchange there. This is something that was really missing for those of us that have to use Exchange and is a welcome addition.
[crarko adds: Are a lot of you using iOS with Exchange out there and has it been a pretty smooth ride for you? My experience has caused me to feel nothing but sympathy for those still using Blackberry with a BES.]

