Computer Modern is pretty obvious. The superior kerning of TeX is more subtle. I mostly see the really shitty kerning of Microsoft Word, which has no excuse, it's had plenty of time to imitate TeX.
You can get decent kerning in Word, but you have to enable it manually in every style along with automatic hyphenation. The result looks good as long as the paragraphs are not justified. Justification is terrible because of the awful line-breaking algorithm Word uses.
InDesign, on the other hand, basically copied TeX's line-breaking algorithm but they tweaked it so that it could be applied in real time.
