When all else fails for ideas for content, take to twitter. (Follow us @Pensburgh, by the way)
The bottom of the roster spots for defensemen is probably the best training camp battle to watch, now that the Penguins have signed Matt Cullen and basically solidified their top 12 forwards.
Brian Dumoulin ought to have an edge - he's played a year with Mike Johnston's system, and played in all 5 NHL playoff games with the Penguins last season. Even though he was in a highly sheltered, low time on ice role, Dumo wasn't on the ice for a single goal against, which deserves a nod.