The mouse pad is touch sensitive- you can set it up to click, and, unless I am remembering incorrectly, you can set it up to drag as well (I never use the drag feature on any laptop, so I don't remember if Apple offers it).
I feel that Apple laptops are quite good. They are certainly near the top in terms of design, content, weight, and possibly power. Find another 17" laptop that is less than an inch thick!
However, there are some problems. The battery in my Dell (I didn't choose to get a Dell, my school requires us to all buy the same computer) definitely lasts longer than the one in the iBook I used to use and I think that is due to the Centrino processor. Also, one feature I desparately wish Apple included was Hibernate. I love being able to shut off my computer without actually shutting down and the sleep function on the Apples is just not the same. I have actually had my iBook shut down a few times because it ran out of batteries while sleeping. Also, when watching DVDs on road trips or airplane rides, if I wanted to switch batteries on the Dell, I can hibernate it and swap them. The Apple needs to be Shut Down to do the same thing. That is annoying.
On the other hand, since OSX is the best operating system, just by running it, the Apple laptops are sort of leading the field.