I do. The new ASP.NET MVC stuff is really nice, and I suppose the biggest draw for me is that I already use C#/F# on a daily basis, so using ASP.NET is just a matter of learning the API.

If your only experience with ASP.NET was with the old, ASP.NET Forms-based stuff, I understand where you're coming from -- my first development job was writing ASP.NET Forms apps on .NET 1.1...it wasn't pretty, to say the least -- but you should really give the new ASP.NET MVC 2 (or 3, which is almost RTM) a look.

I happen to like writing web apps using .NET. I came across AppHarbor yesterday, got a beta invite and started playing with it today. Yes it's very early, but I thought there might be people here who would find it interesting still.

A ton of companies have a lot of internal code written in c#.

I do. I love it.