You can never have too many tube sites bookmarked but sometimes its hard to find ones that you can trust. Tube Q is a tube site worth a look with constant updates and new videoclips.
The homepage unfortunately does have annoying advertising near the bottom, but if you ignore this, and concentrate on the thumbnails you can't go wrong. Free porn videos are all shown on the homepage with a nice mix of both studio shot professional porn and amateur homemade clips. Click on one of these thumbnails and the movie loads straight away.
The video player page has a lot of advertising on it, so might become distracting while you're trying to have a wank. Categories are available to narrow down your porn viewing and include all the usual options such as big tits, anal and hardcore. If you can cope with the advertising this isn't a bad little site