But for the actual cameras, lenses and the like, there's shotonwhat.com, where you can find out what lenses the cinematographers at "Chelsea Lately" use, and scour a list of (at the moment) 910 films that used the ARRI Alexa.
The people behind the site say:
Our goal at ShotOnWhat? is to create the largest collection of technical information that exists for Film & Television productions. If it has been seen on TV or shown in a theater, we would like to gather as much technical information as possible about the cameras, gear, post, sound, VFX and any other associated elements or processes, notes and trivia from the production. We are making the information searchable, cross referencing it a bit, and creating some trending to observe long term shifts in technology.