This is the classic Jamcrack Route, and is every bit as popular as it is classic.
The climb ascends the beautiful splitter crack which may be found a few hundred feet uphill and to the right of the point where the Yosemite Falls Trail is closest to Sunnyside Bench.
The first pitch is perfect hands and goes at 5.7. A bolted anchor with rap rings may be found 20 feet to the left of the top of the first pitch, and immediately below and left of the second. The second pitch starts as perfect hands and narrows to fingers. This is the crux of the route at 5.9. Pitch two also ends with a bolted anchor and rap rings. In his guidebook, Roper mentions a third pitch which attains Sunnyside Bench, but this variation is not mentioned in any modern guidebook, and so should only be attempted by the adventurous.
From the anchors you can top rope Bummer and Lazy Bum. Only one rope is needed, pitches are 80' or shorter.