I can also confirm Tom and Jerry that I picked up the same time as Scooby and with the same name on top and HB copyright as the Scooby glass, so if there are 7, then it's actually 8. However, I'm not sure about the two HB glasses being part of the 1998 set. I remember asking that question back when the glasses were available, but never got an answer that I trusted. That's why the Scooby and the Tom/Jerry glasses are listed separately in the DB.... I haven't seen either Sylvester (until now) or Tweety...