There's some buzz on the board about the Venus Optical 60mm 2.8 2:1 macro. In that vein, here are three other Chinese lenses for PEntax. All are manual focus, original K mount, full frame. The 135mm and 85mm lenses are pretty well known. I didn't know, until I checked the company's website, that they have a 35mm f2 in Pentax K mount as well.
Camera Lenses Archives - ZY Optics (Shenyang Zhongyi Optics )
ZY Optics makes the Mitakon lenses. Their Creator series is full frame (please, for the love of all that's holy, do not read anything into that) and includes a few Pentax options:
85mm f2 35mm f2 135mm f2.8
They have a 42.5mm f1.2, but it's only in M43. Dang I wish it had a K version. At $400, that would be a STEAL for a fast normal prime in K mount.