I've taken the time to re-architect my 3-year-old online video poker machine. The old one used tables throughout, images for cards, and looked terrible.
I've modularized everything in a complete re-write, using HTML5 and CSS3 for the display, including cards, and Mootools for the game engine and logic.
The engine now supports multiple games and decks of cards, among other improvements, and loads lightning fast. Oh, it also plays well on iPod/iPhone, and I can add new games ( 3 so far... ) in a matter of hours.
You can play for free here: Video Poker