[Beetlejuice]

Grace and Mikey were in bed with each other within a week and brought nothing to the show as a couple imo.

Helen and Paul were entertaining at the time. Jade/PJ, Kate/Spencer, Adele/Lee/Sophie and Alex/Adele were all a big part of BB3. Michelle and Stuart were funny at times during BB5. I found Chanelle to be quite funny in general so I enjoyed her on/off thing with Ziggy. Aaron/Faye were often very funny together as well (and are still together I believe).

It really depends on the people involved. I know Digital Spy is always complaining about this stuff but I remember how many of them loved Emilia and Jeremy on Celebrity Hijack and were willing them to get together.