If we're getting all particular then I don't actively hate any of the series individually..............but all the series have episodes I don't think hit the high notes and as each series progressed I found them to be less engaging as they went.
Personally I put that down to really not finding the sets of characters in VOY and ENT very interesting (really, echoing the copies of copies sentiment from a few pages back). The stories probably had elements of interest, I just never heavily cared about who they were happening to.
I'm not going to break it down into episodes though. That would take more effort than I'm willing to give this afternoon.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist