On the inside, pretty much all manufacturers are using the same components (Wifi cards being the only real exception), but Thinkpads have always seemed much better constructed than the equivalent Dells or HP's.
There isn't really any PC laptop brand you can buy to escape the "reminds me of crappy company laptops", with the possible exception of Sony.
Some point to Vaio's as being the most "Apple-like" PC's. That description can be either positive or negative depending on how you feel about Apple machines.
As it is, I've never really liked Sony's manufacturing process for laptops (I've only had 2 over the years though, and it's hard to divorce yourself from personal experience when recommending a brand).
For what it's worth, I wouldn't ever buy another non-Thinkpad PC laptop. I've had an Asus, about a dozen Dell's, and a bunch of HP's. They were all giant pieces of shit (Dell's being the worst from a hardware failure perspective).
If I get a Thinkpad, I am fairly confident I won't have any issues for at least a bunch of years (my last T series put in a good 6 years of daily use without any issues).
As far as I'm concerned, they're the Honda of laptop manufacturers.
HP is absolutely the worst laptop brand I have ever owned, I've known plenty of people with HPs and almost every single laptop has overheated to the point of shutting down the computer and breaking within a year and a half.
Thinkpads have the added feature of being pretty compatible with linux, though I think some of the nvidia cards that come with the T series are not compatible yet.
I've had three hps in five years- one hard drive crash was the only issue, aside from a keyboard button falling off of one. (Kids have them now and they are doing fine).
Currently running two Asus'- a "business" laptop (UL50V) and an eeePC for travel. Both with Ubuntu/Mint linux. The Biz machine is nice, the eeePC is what it is. Boots fast, standby works in ubuntu, etc. Better value than an ipad for my road needs (although the ipad is nice for other things).