Re: Two-Parters where the 2nd part is better?
Actually, a list of the cliffhanger episodes wouldn't be the worst thing ever...
Ask and you shall receive: http://en.memory-alpha.org/wiki/Story_arcs
Of course, the page also notes the more unique nature of multi-episode arcs like DS9 and ENT. My personal preference is, if you consider it a 2-parter or not, then go for it.
"A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP" -- Leonard Nimoy