Both Colorado and Washington could go to recounts, and potentially, to the courts. Also, even though they're both Republicans, the outcome of the Alaska race could be entertaining. The write-ins lead, but they have to be verified as being for Murkowski. That requires discerning voter intent, which is subjective. Also, the Tea Party tried to muddy the waters by have about 100 or so write-in candidates submitted at the last minute, some with names very close to Murkowski's.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson