Strangeloop is one of the coolest products I've seen (not as cool as Surface, but that's hard to top ).

This product is an ASP.NET-aware device that does intelligent caching for web sites. It can do things that seem virtually impossible - it is that cool! Here's Richard Campbell's blog entry with more background.

If you have the need for a nearly transparent boost in performance for your ASP.NET web site, Strangeloop is something you should look at!