How about trying out the Kramer Master Tape plug-in by Waves? This tape emulating plug-in not only gives a pretty realistic tape sound to your productions, it also looks really cool.
I tried it out on a few productions of my own, but I wasn’t as impressed as I thought I might be. Some of the other tape emulators, such as Slate’s plug-ins, seem to have a more drastic (or even recognizable) effect on most tracks and styles of music. Whether or not you like the plug-in, check out this webinar with Eddie Kramer – it’s pretty enlightening!