tedster - 1:43 am on Jul 6, 2011 (gmt 0)
I think it's useful for you to be able to track these "conversion goal" events. But I don't think Google Analytics is part of the data that Google's Panda is using.
Since these events on your site require two user clicks - one left click and one right - the browser already tracks those actions, as well as any scrolling. IMO that's quite likely to mitigate any bounce rate troubles.
I do look forward to hearing about your results.