Not sure how long these have been around, but I just saw them for the first time yesterday. I bought the picture hanging strips (bottom left). They almost look like Velcro, so you can easily remove and reattach the frame back to the wall. I will try to use them to hang movie poster frames.

Each strip supports 1lb, so I'll probably put 4 on each frame.

http://solutions.3m.com/wps/portal/3M/en_US/Command/home/us_en/products/picture_hangers/

Anyone use these style of command strips before?

In the past, I've used the regular "hook" style to hang movie reels. Works well.