Excellent atmosphere...albeit a bit crowded.  however, that's merely a testament to the bar's reputation.  i used to frequent the squirrel cage in the 90's a bit, so stopping in to wet my whistle a couple months ago brought back fond memories of gin and tonic (many, many of them), and a killer juke box (yeah, that's right san francisco i said JUKE BOX).\n\nlong live the cage.  i plan to stop in whenever i visit the 'burgh.