I just got started with panoramas, but here is my favourite so far. check it out i just uploaded it and i already have 2 fav's on dA!
http://kumbric.deviantart.com/art/Through-Teal-Mist-127921448
Heres my halo stuff gallery
i will update with more panoramas later, there are four edited screenshots in the halo stuff gallery though, the ones i posted in screenshots