That's not a case for a buffer option. That is a case for the user to properly set up his TiVo. If it is a show in which you might be interested, then if the TiVo is properly configured, it will already be recording the show. Note also the odds of such an event are vanishingly small. Out of perhaps 200 - 500 channels, the odds the two (four in the case of the elite) tuners being "inactive" but tuned to one of the top two most interesting programs out of the 200 or so available channels is typically less than 1%.