The Self Service Boulder really only has one problem on it but fortunately it's a super classic. The left arete (V2?) can be climbed but it is chossy and sandy at the top and most people move out onto the left face to finish. Self Service, however, is definitely worth checking out.
With your back to the boulder that has "Warm me up Scotty" walk along the path and down left into the wash. The Self Service boulder can be seen when you get down into the wash.
Browse More Classics in Self Service
Mountain Project's determination of some of the classic, most popular, highest rated routes for Self Service:
Self Service V5 Boulder, 15 feet
Featured Route For Self Service