Magic Pinball

Includes a feature to save high scores.
http://www.bonus.com/bonus/card/raster_magic.html

PachinkO

Online pinball by Steve Baker.
http://sabgames.com/arcade/pachinko.html

CBS Sportsline

Baseball themed virtual pinball machine in Shockwave.
http://ww3.sportsline.com/u/contests/arcade/frames_mlpinball.html

Rec.games.pinball

A FAQ for the newsgroup.
http://cascade.mit.edu/pins/faq.html

QuadGames High Gear Pinball

A Shockwave pinball game.
http://www.quadgames.com/games/highgear.html

War Against Terror

A pinball game with an anti-war theme.
http://war-against-terror.info

The Pinball Zone

Directory of online pinball games featuring preview screenshots and brief review for each game.
http://www.thepinballzone.net/game.php?id=online_pinball