What are some great examples of web typography using only standard fonts and CSS?

This is a great tutorial (and showcase) about web typography. http://webtypography.net/ This article is a must-read as well: http://www.informationarchitects.jp/en/100e2r/ This article is a big old, but still valid: http://ilovetypography.com/2007/09/19/15-excellent-examples-of-web-typography/ Some more best practices: http://www.smashingmagazine.com/2009/08/20/typographic-design-survey-best-practices-from-the-best-blogs/ And some quick tips: http://csswizardry.com/type-tips/ I hope this is helpful.

If you mean 'good' by sites that demonstrate their designer's sound grasp of typographic principles, then Quora is a good place to start. Any sites that organize information so that users can quickly understand and interact with content rely on good typography. They are likely to look pleasing to the eye even if they don't make you think 'well that's a creative site'. They will encode meaning through appropriate use of color, type size, weights, space, rules and glyphs such as bullets and parentheses. I think http://Flickr.com copes with complexity admirably using standard typefaces, as does http://Delicious.com and the British newspaper http://Guardian.co.uk. I'd be interested to hear about very pared back designs for complex sites – that have managed to do away with buttons, icons and heavy use of color to encode meaning. That really would be just good typography and css.

I think the NYTimes has done a great job since their 2006 redesign.  The line heights, margins, font sizes weights and colors are meticulously thought out, readable and nice to look at.  It's not incredibly artistic but exemplifies good, classic typset design. http://www.nytimes.com/

This article about font-stacks has many examples of websites that creatively combine web standard fonts and non-standard fonts based on similarity. http://www.awayback.com/revised-font-stack/ I'm sure you will find some good examples there but expect to find many of them to be using non-standard/platform specific fonts. Since the idea of using font-stacks is to serve alternate fonts that look-alike it is expected that text with web-standard font-stacks will display just as nice as non-standard ones.

A List Apart uses several of the web fonts together in a very elegant way. Check it out. http://www.alistapart.com/

Take a look at the Typographic category on siteInspire for some excellent typographic websites: http://siteinspire.com/showcase/category/style/typographic