Personally, I have recently come to love SASS after using it for the past five months on a very large project. What I hate about it, though, is the implementation, which is currently (AFAIK) available only in Ruby, and I just can't stand all the issues with dependencies, fickle behaviour of support apps and the like.

I'm yearning for a good Python-based implementation, ideally a drop-in with Django so I could use SASS files directly instead of Django templates, but nothing fully satisfactory has been produced yet (and I don't have the time to do it myself).

Please note: this is not intended as Ruby bashing, it's a perfectly fine language; it's just that I've practically never had a smooth experience with it.

Edit: Ah, and yes -- the author's job could be even easier if you used the Compass framework (specifically, it has a predefined helper for those gradients, and other stuff that are currently in a browser-prefix-hell): http://compass-style.org