PIR beat earnings last month and the CEO was very positive about their future outlook. They traded in the $8's back in 2007 when their negative earnings were 3 times worse than their projected 2010 numbers. After their stock price broke out of consolidation in the 2.50's last month, insiders snapped up shares well into the $3's.
They also have a pretty high short interest which adds fuel to any bump in share price.