Deductible IRAs (with the same maximum contributions) are available to those with lower incomes or without any other pension. (Nondeductible tax-deferred IRAs are open to all but are not worth it, given the current low top 15% tax rate on long-term capital gains and dividends.) While you're at it, consider doubling up and making your 2004 IRA contributions in January, too.
FORBES: Fund shelters