This seems to have been lost yesterday amid the news about signing day and the win over OSU. He's picked two pretty good offenses to look at, if nothing else. What's interesting to me is that both teams (at least once Kaepernick became the starter in SF) employed the read option.
For those who didn't see much of Washington, they were a typical Mike Shanahan team in that they ran a lot of zone runs. What made this team special was the threat of RGIII keeping the ball and taking off to the other side of the field (though he didn't run as often as watching highlights might make you think). Teams learned to be afraid of him quickly, and this gave Alfred Morris the space to rush for 100 ypg. Washington's rushing attack was the best I've seen in the NFL in years (though I don't follow the league very closely) when they got things going. They ran for 186 yards v. the Ravens, for example, at 5.3 yards per attempt...EDIT: Washington also ran a fake inside zone handoff that turned into a play action pass with good success.
I didn't see many San Francisco games, but they seemd to follow the Jim Harbaugh mold of using multiple TEs and lots of pre-snap motion. EDIT: See Space Coyote's post below for more info on the Niners.
I'm sure we're all looking forward to seeing what the offense will look like post-Denard, and it will be interesting to see how much of the 49ers or Washington we see in it. Like I said, they are two good templates to start with at the very least.
Finally, this photo should be posted more often: