I guess I owe an answer:
#1 goes to Rubicon (.10) at Joshua Tree: brilliant and obvious natural line to a striking formation's summit, aesthetic, steep, hard thin moves between secure jams.
Honerable Mentions:
Little Finger (.5) at Roger's Rock. Unique, casual, fun, aesthetic obvious line.
Exorcist (.10-) at Josh. Sure, it's only 60 feet ling, but very inch of it is great and the challange is sustained.
Wholesome Fullback at Red Rock (.10-) is pretty legit for the grade, has thin crack down low and keeps getting wider
Vertigo on Cannon (.9), the half moon get the glory but the thin crack on p. 3 is my favorite climbing on the whole route
New Testament (.10-) at Smith, one of the many outstanding overlooked trad routes at this bolted mecca.
Lichen Delight (.11-) and Airation (.11-) are both outstanding, if difficult, with yellow and red alien sized cruxes that fit me so well
Also hard but the showpiece of Rumbling Bald is Shredded Wheat (.11-), very thin, technical at the crux but great finger jammin' until it gets severe
D. Lucander