OMG, I love watching Big Brother!  I've watched since season 1!  It was created by John de Mol Jr, and it's the best reality show ever!
I have not seen it since season 1!
Wow, you've missed a lot then!  Dr. Will was the BEST!  Big Brother is franchised in over 54 countries, which is amazing!
Wow. Do they have different shows in each country?
It's pretty much the same format in each country - the housemates are voted out once a week and the last one left wins the grand prize!
I should try out!
You should!  Be prepared to be monitored by live television cameras 24/7!  And watched by the fans on the internet, since they broadcast the live feeds!