A friend was asking me where I'm up to since she missed the last aired episode here in OZ, I went to lookup online and found this interesting - A poll on the best episode of the season. At least it seems everyone agrees...
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Q: Which is your favourite Season 4 episode so far?
408 votes since Jan 1 2008
401: 'The Beginning of the End'
8% 32 votes
402: 'Confirmed Dead'
5% 19 votes
403: 'The Economist
5% 19 votes
404: 'Eggtown'
10% 42 votes
405: 'The Constant'
62% 254 votes
406: 'The Other Woman'
10%
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Given the date on the Tombstone i'd say something is definitely up.