I use Samyang 35mm f/1.4 ED AS UMC and I have to say I have been pretty impressed with it on many levels. It is relatively cheap and I think it competes with lenses that are more expensive.
What I like about it is that it's dynamic (as in useful for many situations), fast, sharp (from about f/2.8 ), fairly wide (alike 50mm), sweet bokeh (rounded).
I have been really surprised at the quality of this lens for the price (around £350 when I got it).
Oh it's also a Prime and it's fully manual (I prefer that for film)