I like the idea of matching shirts. DH and I sometimes match. We don't put our names or dates on the shirts.
On a previous trip we both wore Wall*e shirts. His had the Buy n' Large logo and mine said "Axiom Crew".
We also like to wear shirts that match our location. For instance, he has a Kingdom Hearts shirt that says "I play games" that he wears to Disney Quest.
I like to wear my "Happily Ever After" shirt to the Magic Kingdom.
This September I'll be making some new shirts for us. I'm going to wear this shirt at 'ohana and DH will wear a hawaiian shirt.
One day we'll wear these shirts (not sure where).
I think the only identical shirts that we will wear will be to Animal Kingdom. Some one else on the DIS made these and I just love them!