For years, even when on ACTDU I would put the max allowed into an IRA every single year - which at my age is now about $4500, but realized a few years ago that a 401k allows you to hide $15500 in income per year. That equates to a big tax savings and is what I do now. 'Course deducting the interest on my mortgage is a big help in reducing my income for tax purposes, too and is what I still recommend to everyone who can - BUY A HOUSE!
Now would appear to be an excellent time, with the lowered loan rates and reduced prices in wake of the subprime loan fiasco.