Can the effective date of an EGTRRA amendment be "current date" (such as 11/26/08)?

If you are talking about an EGTRRA restatement, then you can generally make the effective date for the restatement current, but the individual provisions will have earlier effective dates hard-coded. But you need to check with your document provider to be sure.

Otherwise, I'd say the answer is "no."

For example, the SunGard PPD documents require the EGTRRA restatement date to go back as far as 1-1-2002. However, the SunGard Corbel documents have the retroactive effective dates already hard-coded regardless of your 'restatement' date overall, so those documents can have a restatement effective date that is a 'current' date.