Having used the Macbook trackpad... I don't understand the hype. As a trackpad, it's brilliant. But so what? On a table, I'd much rather use a mouse. The weirdly inaccurate precision, odd acceleration, and clumsy movement makes the trackpad feel off. There's no acceleration sweetspot and there's no sensitivity sweetspot that I could find.. On my lap, I don't usually have enough space to use a trackpad over say a trackpoint.

It's a great solution, but it just doesn't solve any problem I have. I'd rather have a scroll wheel.