I thought my efficiency would suck, so I upped my grain bill to adjust for it. I ended up with an OG of 1.062 with 12.5 pounds of grain, and while I'm not going to bother calculating efficiency, I have a feeling that's not bad.
Anyway, I just checked my FG this morning (I transferred to secondary last night but had to borrow a hydrometer this morning) and it was 1.009, and this was with White Labs Irish Ale yeast, which is listed at 69 - 74%. Mine was over 85%! I think my mash temperatures might have accounted for it: I aimed for 153, but at the end of an hour, it was at 149. I need to find a way to keep the temperature up. I've never had a FG below 1.018, so I'm pretty psyched.