There has been a lot of consolidation in the coffee and tea business lately. Recently, Caribou Coffee (CBOU) became the latest acquisition to be announced. The acquirer of Caribou already has made strides into this space, purchasing Peet's Coffee and Tea last summer. About a month ago, coffee giant Starbucks ( SBUX ) announced it would be acquiring Teavana ( TEA ) as well. T hose are thr ee acquisitions in the space in a short period of time, and investors are wondering which will be the next candidate to go. That brings me to Green Mountain Coffee Roasters (GMCR). Green Mountain has been one of the biggest debate stocks over the past year, with longs and shorts fighting extensively. Green Mountain shares traded over $115 late in 2011, but just a few months ago, were trading for barely above $15 after their third quarter earnings report. Green Mountain announced a huge stock buyback at that report, which sent shares soaring higher, more than doubling at one point.