Though I have always been a DC enthusiast, I was intrigued by the idea of the Deadpool movie, and knew I'd end up watching it (I probably see 70% of DC films that are released and maybe 20% of Marvel ones). I enjoyed its definitely postmodern approach--and wish Reynolds' Green Lantern movie had one-tenth the humour and charm that THIS film had.
It'll be very interesting to see how comic-book movies are affected, both short- and long-term by its massive success.