Seth MacFarlane's Ted was a surprise hit in 2012 pulling in almost 220 Million domestically against a 50 Million plus budget. With margins like that, of course there was going to be a sequel.
Local boy Wahlberg was spotted filming Ted 2 in and around Boston with the lovely Amanda Seyfried. You don't really lose much going from Mila Kunis to Amanda if you ask me. Ted himself was also in attendance, or at least a fluffy stuffed representation of the foul mouthed bear.