While much of my time is spent making photos look better... sometimes I have to go the opposite direction. Mister Retro has three filter packs available called machine wash that can mangle and age images or text. Think of those "new-old" tee-shirts that are so popular in stores like American Eagle and Abercrombie and Fitch.
I first started using Machine Wash when they were actions for Photoshop, now they've evolved into actual filters. I checked them out at Photoshop World in Las Vegas, and the plug-ins are fast and responsive. These filters are of course well suited for clothing, but I find myself using them on photos and type treatments for the screen as well. To see a real-time preview, check out their gallery.
The filters are priced at $49 a set, and upgrades for previous users are available if you contact tech support.