Sometimes you just want a list of when were my dimensions last processed, or when was the schema updated last? You can always right click on the dimension and look at the Properties, but if you want to check for more than 1 dimension, that's kind of slow.
Once again, I've found some scripts and code from Vidas Matelis
Using SSRS to report SSAS 2008 database structure using DMVs
http://www.ssas-info.com/VidasMatelisBlog/144_using-ssrs-to-report-ssas-2008-database-structure-using-dmvs
It's a lot quicker to just fire some sql queries against a linked server to list "Last processed date" than checking one dimension at a time.
Note: Vidas Matelis blog engine changes the quotes and double quotes up a bit, so you'll need to run a find/replace on these characters in order to get it to work.