A nice comprehensive blog post on the TCGA brain study can be seen here:
http://www.highlighthealth.com/diseases-and-conditions/the-cancer-genome-atlas-reports-molecular-characterization-of-brain-tumors/trackback/

It is interesting how the perception of TCGA has changed - it is hard to remember that there was a time when some people were very concerned about whether it would yield anything of value. The blogger at highlighthealth.com says:

"This is an excellent example of how current genome characterization technologies can systematically explore the universe of genomic changes involved in cancer. The TCGA is also studying lung and ovarian cancer."