I first heard this one on one of the radio mixes on Stereolab's website, and found a copy for relatively cheap on eBay shorty thereafter.
Anyway, it's great.
The sound reminds me of Gary McFarland's "Latin Lounge" stuff but with a bigger sound and an extra element of subtle funkiness. Gismonti's arrangement here is adventurous, unpredictable and totally engrossing.
The whole album is wonderful -- "Pendulo" and "Parque Laje" are equally as good -- but I'm still most partial to this, the first track that I heard.