Black Uhuru has got to be one of the best 5.10s anywhere. Begin on the far left side of the wall, well past scarface, sicilian, etc., underneath a huge varnished right facing corner. The climb begins up some easy ledges to the splitter corner. Climb this with jams and laybacks. The climb has several difficult sections with good rests/hand jams and takes all sizes of gear. This is a long pitch and needs two ropes to get off safely (maybe 1 rope reaches the top of the ledges but it has been a while and I don't trust my memory)
This description doesn't fit the route I've always been told is Black Uhuru. Unless I'm mistaken Black Uhuru is near Scarface, and is the next dihedral to the left of the hand-to-wide hand crack Where's Carruthers. It is a left facing dihedral which is climbed via twin cracks (one is thin hands in the dihedral, the other is wide hands on the face) into a chimney. The chimney is exited via cruxy liebacks to another lieback section before the anchors. If I remember correctly, the crux is actually best protected by stoppers and is a rare Indian Creek 5.10 that felt for-real for the grade.
The hands corner just to the left of Where's Carruthers is not BU. The above description is accurate in terms of the climbs location. The climb has a plaque below it. BU has a lot of fingers as well, with a short finger crux near the top.
'where's carruthers' is only about 5 feet left of scarface. starts in a hanging flare of sorts (off fingers to tight hands) and then goes to a straight in right facing dihedral with hands to fists. the route listed on this page definitely isn't WC. it looks like black uhuru.