I personally recommend all the bad-ass routes I have done in the Valley that will impress you, but I can't give beta 'cuz it was so long ago---pre-cams, no sticky rubber, swamis---that they are way easy now.
Seriously, gang, didn't you see "1-1/2 days, moderate to easy, first time"? Some of these recs. are not realistic. Try El Cap base, Manure Pile, Central Pillar, sure, but some of the harder/longer suggestions will hose a first-visit guy.
A place not mentioned yet is Yosemite Falls, Jamcrack Route (5.7/5.9); then, Lazy Bum 10d/Bummer 10c, which can be led or TRed and are very quick and easy to find.