First, of course Heap and Torch detects e-mail addresses, web addresses, phone numbers and have some formating. But lots of products do that, this post is about what's weird.
The data detector finds different ways to IM people. See in this image it has detected, AIM, Skype and Yahoo (and a UPS number):
But you also can use it for lists (in addition to the to-dos on messages):
It also detects US addresses (and provides a link to Google Maps):
And now it also detects European addresses: