Here's a post that the enterprisey folks ought to read over and over, until it sinks in:

Yes, overengineering is common among us smart people. (Ed note: Has anyone else noticed that we need an international emoticon for irony?) The smarter we are, the more likely it seems we are to overengineer. Until you get to the really smart people, who are typically the ones offering you the chewing gum and pennies. (The brilliant people look at the solution proposed by the smart people and figure out how to implement it only using the same chewing gum and pennies that the very smart people offered thereby solving both the simple and general cases with no incremental effort.)

Words of wisdom