If you're an Atlassian customer using JIRA, Confluence or one of their other great products be sure to consider attending Atlassian Summit.

After attending their 'Atlas Camp' developer conference last November in 2008 the small investment of time and traveling expense was easily justified. I immediately reaped a number of rewards through new relationships, networking and being able to ask very targeted technical questions of not only the expert developers but also of whom I consider to be some of the top developers in the world.