For the last 14 shows, Eric has worn a "set-up day" T-shirt.  Most of the time, it does not have anything to do with the show that is about ready to kick off.  Otherwise he actually wore the new show's T-shirt design.  Eric wanted people to comment on his shirts that way everyone could "break the ice" before the show officially started.  Below are some of the T-shirts he wore, the year he wore them, and a brief explanation of the shirt itself.  Thanks for sharing Eric.
1997:

Being our first show (Marlin, Bill, John, myself) I wanted to have some kind of door prize to give away that everyone would remember.  Williams was still in business so I called one of their sales people.  After talking to them about our gameroom show I got 6 T-shirts from them for free.  We each kept one, the other two were given away as door prizes.
Front
Back
1999:

This T-shirt I bought from Joel when he had the BHHHC club of america.  A book that had some interesting tips on how to fix a BH or HH game.
Front
Back
Back
2001: 

The front said "I love knockers!"  The back said something like 'what do you think I was talking about....It's a pinball thing!'    Complete with assembly drawing.  Bought this off the net and dyed it gray.
Front
2002:

I like chocolate milk.
Back
2005:

Wore this t-shirt because it was 10 years old.  Many companies on this shirt had gone out of business.
Front
2004:

I thought the yellow t-shirt was loud.
This red one was loud too!
Front
2008:

Made one t-shirt of this with a 'direct to print' machine.  I made this to show everyone what the whole backglass looks like without the score display windows.
Washed it once, and it looked like crap, pitched it in the trash.
Front
2009:

I picked this up at an Anime Convention this past summer, it looked neat to me. 

Tim from Parts Plus and I had a little standing joke between us. He made a comment "You know they aren't real right?" My reply was "Really, I didn't know that, say it isn't so."

Front
Back
2010:

The first music group t-shirt that I wore for set-up day.  A lot of people saw the shirt and we started talking about the group.  Alan Parsons is a progressive rock band that started in 1976 and still produces CD's to this day, their music is appreciated by all ages, as most of us found out.  Saturday during the shows tear-down, Alan Parsons music could be heard outside from a truck.  Even though the show was noisy, without games being played during tear-down, it helped break the silence.  This is the only time I will promote someone elses website and music, check out www.the-alan-parsons-project.com   Alan married a woman in the next town south of York less than 5 miles away.  I feel that's close enough to honor the music he wrote and produced.  Sadly his long time singer, songwriter, executive producer, musician, co-founder of the "Project" Eric Woolfson passed away last year two months after the T-shirt arrived in the mail. 
(Eric Woolfson 1945 - 2009)
Setup day, raceday, it's all the same.
Not everyone was able to see this race earlier this year due to traffic issues.