Loving Castle Project's Monorail. Having used webforms for the last 5 years I'm currently enjoying the freedom to generate whatever HTML I desire. For most of the applications I work on CRUD screens are the order of the day and as such the HTML is fairly straightforward.
Very occasionally though I miss some of the web-controls that are available. Graphing is an excellent example of that. Having briefly contemplated writing a server-side control to squirt out a jpeg/gif (couldn't find any 3rd party graphing controls to do it) a colleague of mine discovered AnyChart, a flash based graphing component.