WordPress plugins that provides many of the features on wordpress.com for wp.org users. Interesting, certainly deepens Automattic's grip on the WordPress ecosystem.
TalkPress VIP is a bbPress forum hosting service from Automattic / WordPress.com. Starts from $1'000/mth plus $1'500 setup. Application process, not all sites accepted, like WordPress.com VIP.
QuantCast stats on the WordPress.com hosted network
Use WordPress.com's stat service on your standalone WordPress blog.
This is a collection of stats from WordPress.com including user signups, number of blogs, page views, etc.