They do get it right. In fact I find Macs very limiting since they lack this: http://notebook.pconline.com.cn/testing/0504/other/we1net_ib...
A laptop without this is not worth buying. See? Who knew than another guy's opinion can be so different...
I can type and operate "mouse" without moving my palms from the typing position. I can do all three types of mouse clicks with my thumbs! Moreover, Thinkpad's touchpad provides the most direct feel when moving the cursor [more on this later]. Having the central "pin" for quick cursor jumps (while typing) is absolutely invaluable.
Now, about the directness and precision of the touchpad. It's all about drivers. Early white Macbooks had a terrible lag of cursor movement but Apple fixed it later in software. My Thinkpad had somewhat inadequate "cursor feel" under windows 7 which came with it, but under Ubuntu it has the most satisfying "mouse" money can buy, called Ultranav.
Lenovo gets it right.