Climbed this one a couple of times. The first time was back on Sep 28, '03 via the south rib: A rare dayhike that both began and ended in daylight--quite a treat! Emerson was one of my favourite peaks up to that point. The south rib is an easy but fun scramble, with some nice views too.
Came back on Jun 9, '05 to climb the SE Face with Sam. Fun route; a few easy 5th class moves near the bottom (no harder than a good deal of Sierra fourth class), and then almost 2000 feet of fairly continuous and enjoyable scrambling, nothing more than class 3-4 the rest of the way. The final ridge scramble to the summit was particularly exposed and enjoyable.