The Things We Do for Love - S10-E17
Continuity mistake: While Will and Jack are sitting at the table having a conversation, the mugs monogrammed "W" and "G" from which they are drinking tea magically switch between them several times. (00:06:30)
With Enemies Like These - S11-E3
Continuity mistake: Sharon Timmer introduces herself to Grace in Series 10 Episode 1: "I've lived directly below you for 19 years." But then in Series 11 Episode 3 she seems to live in Flat 9B next door to Will and Grace. I'm not sure we've ever seen who lives there before, but guessing by the layout of Will and Grace's flat, there wouldn't actually have been space for an extra flat in that space. (00:00:16 - 00:12:12)
Answer: A history of the game can be found at http://www.fast-rewind.com/bacon.htm.
J I Cohen