Dow

The 2000 boom peaked right below 12,000 (11722 on 1/14/2000).
The 2008 boom peaked right above 14,000 (14164 on 10/9/2007)

It seems obvious that it will next peak about 16,000, about 7.5 years after the previous peak.  This would put it about May 2015.  So we should have about 2 years left before the next crash.

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Here is another chart based on recent data:

Maybe the Dow will push on to 16,000, or maybe it will correct down to 14,000 before resuming its ascent.
I think we will see a correction, then a push on to a 17,000 peak first quarter of 2014.