[CGudapati]

Not to be that guy but regardless is the correct form. Irregardless is considered as non-standard or incorrect. But if you do know this, please don't mind this nitpick.

[hobs]

I actually didn't know that. I googled and learned that it came into use in the 50s, interesting. Edited and changed.

Edit: too old to edit! But still, thanks for the info.

[lostcolony]

I do not believe this thread just happened.