Ahhh time for an old faithful. NudeVista has been running since way before I was a porn user. It's a well designed site, and is well trusted, which can sometimes be difficult these days with various tube sites popping up.
The homepage displays tube videos, with thumbnails and descriptions. There are currently over 16,349,726 tube videos and 35,697 adult models indexed. Most of these videos are of a decent length too. If you click on a thumbnail, you'll be taken to a different website where your video will play. Nudevista is more like a free porn search engine in that it doesn't host movies itself.
Each thumbnail displays tags so if you click on these you can filter down your porn. There is also a models page, with popular models and a powerful search tool and a directory of tags too. One to bookmark!