The Eye-Fi is an interesting concept: it integrates a WiFi radio into an SD memory card, allowing you to upload images directly from your camera to your computer or to a web photo service. In conjunction with Macworld, the company has announced an update that adds Mac compatibility to the card for direct wireless import into iPhoto in Leopard (as well as setup with Safari). It remains compatible with 19 online services including flickr, Picasa and others, but sadly not .Mac yet.
The 2GB Eye-FI card costs $99.99. The Mac update is compatible with existing Eye-Fi cards and is available for download now.