A number of pros used the Russian Helios 85 on their Nikons back in the 70s. One stop down it hit the right mix of soft and sharp.
I've got the aperture-less Cyclop which has the same glass, makes for good portraits. There's a decent review here. They were going for up to $6-700 a few months ago, but the factory has just started up production again, you can get them for $4-500 brand new.
An awful lot of electrons were terribly inconvenienced in the making of this post.