I have:
2x Muse posters (Resistance Album artwork and album and singles covers compliation poster)
Many Doctor Who posters (e.g. Vincent van Gogh exploding TARDIS, list of every Doctor's episodes, lots from the Doctor Who magazines)
1x Game of Thrones poster (From the book collection)
1x Achievement Hunter poster (Boy Band poster.) Will be adding the Surgeon Simulator one soon.
Plus a lot of smaller A4 posters from magazines.
I'm going to invest in some poster frames for my Doctor Who Vincent Van Gogh, Achievement Hunter (Boy band and Surgeon Simulator) and Muse posters since they are fairly valuable to me.