Here is a list of links that I find useful

Business Objects sites
BOB: BusinessObjects Board
Great Business Objects forum that has a lot of support and contributers on technical issues.

SAP Business Objects Forum
Official SAP Business Objects forum where the actual SAP employees will provide support.

Xcelsius sites
Awesome blog that provides plenty of Xcelsius information. In addition theres plenty of discussion on dashboard visualization.

Ryan Goodman’s Interactive Data Visualization
Great blog on Xcelsius dashboard design and practices. Lots of tips and tricks on solving different Xcelsius problems.

Everything Xcelsius is the #1 place to find information regarding the popular SAP Business Objects Xcelsius software. Lots of contributions from the top Xcelsius Gurus.