Here is a site (via Consumerist) that compiles basic nutrition information on chain restaurants all over the country. I like the simplicity of the site design and yes, they have a section formatted for mobile devices as well.
If you are like me, possessing the knowledge of how many calories you are about to consume goes a long way toward reducing the intake. The site was running a bit slow for me this morning. Perhaps their appearance on Consumerist has drawn more traffic than they were ready for.
Little did they know that No Cynics Allowed was about to send thousands of his readers their way too. Someone should warn them.