Have not gone deeper into the OS besides playing with a couple of the bundled applications (GarageBand, iChat, and of course, Safari). This is on my iMac (also runing OS X); I haven't gotten around to doing anything "useful" on the Macbook yet. Previous to these two systems, I have not used an Apple since the Apple
II days. The feel of the keyboard is... different. Not quite as bad as an old IBM PCjr "chicklet" keyboard but strange-feeling nevertheless. I keep finding myself trying to tap the touch pad in a click or double-clicking motion (like I can do on my Gateway), but nothing happens

. I do miss the dedicated PageUp, PageDown, Home and End keys.
Navigating the UI seems pretty easy. Everything appears to be easily accessible. There's a lot of the "cool" graphical effects when opening and closing applications which I could really care less for. The one problem I'm having is configuring the wireless settings. I remember having the same problem when I first turned on the iMac, but then I found out that the WEP key needed to be preceeded with a "$" (to signify a hexadecimal string). That does not appear to work (or be needed) on the Macbook. It's supposed to have an Airport Extreme card and I'm thinking that might be the problem. My Netgear ME102 AP is real old; only 802.11b. I'll have to look at the iMac tomorrow and see how it has been configured. If the Airport Extreme is not compatible with my AP (there may be a recent driver upgrade from what I've read), then maybe it's time for me to upgrade my wireless system to at least 802.11g. I have plugged it into my network hub and I can access the net that way but I'd really prefer to be wireless.
The T23 is nice but I still miss the USB 2.0....
edit: One thing I just noticed... the Macbook power cord (with the neat magnetic coupling) is
very short when compared to the standard IBM AC adapter. Along with the power block that sticks out too far from the wall, this could use some improvement.