Here are a bunch of little things I've noticed, worthy of sharing but not big enough for their own post.
A Lion Correction
I had originally reported that one of my favorite new Lion features was that Quicklook stayed active even when switching away from the Finder to another app. This apparently only happens on my 30" monitor at work, and I don't believe it is the intended behavior. Kinda sad when a bug is preferred over proper operation. Go Lion!
Lion 10.7.2 Update
10.7.2 fixes a few things that were bothering me.
For one, the bug where Desktop icons disappear when you partially swipe to another Space, stop swiping, and stay in your current Space, has been fixed. Do this now and you'll even see the Finder redraw the Desktop icons.
Also, when navigating sorted columns using arrow keys, the headers now don't get selected.
Finally, performance and memory use seem to be a bit better in 10.7.2. Specifically, the green slice of the memory pie in Activity Monitor is consistently larger than in previous iterations of the OS.
iOS 5 On iPhone 3GS
If you're wondering why Apple's new Reminders app doesn't give you the option to geofence your reminder — i.e., you can't set a location — it's because that particular feature is for users of iPhone 4 and up. Now you can stop twiddling your GPS settings and get some sleep.
iOS 5 Little Thangs
A few other things I stumbled upon while playing with iOS 5.
In the Camera app, swiping right now takes you to your camera roll. Also, you can now set macros, so typing "omg" will actually write out "Oh my gawd!"
Also, custom ringtones! Huzzah!
Reader Matt points out that Quicklook does, in fact, stay active when viewing apps other than the Finder on his system. So I started investigating, and it seems that the feature works for other users on my computer; there is a problem specific to my account which is breaking it for me for some reason. I'm presently looking into a fix. For now, suffice to say, this is a real feature in Lion and, for most folks anyway, should work just fine.
Got it! Trashed my Finder prefs. Now I got the Quicklook all the time!