The Tampa Bay Buccaneers had a pretty small but very efficient footprint in free agency. Most notably, they signed defensive tackle Chris Baker and wide receiver DeSean Jackson.
Football Outsiders did their advanced stats/contracts thing and analyzed which signings were the best value for money, according to their metrics—which, to be honest, are pretty dubious in this case. Forecasting is hard with crude measures of quality like AV.
Still, they think the Bucs had two really good signings: defensive tackle Chris Baker, and safety J.J. Wilcox.