In last week's DWTS episode, RTE cut out mid-show. Here's hoping the same - or any other fiasco - doesn't happen again (or maybe we want the drama...)
The movies have given us some classic dance scenes over the years so we're looking back on our favourite to mark tonight's episode.
We kick off things with the most obvious one - Dirty Dancing's 'Time of My Life' routine.
Then who can forget John Travolta and Uma Thurman's gas dancing in Pulp Fiction.
It essentially totally ripped the piss of Travolta's previous moves, for example, in Grease number 'You're the One That I Want'.
Travolta of course also ruled the dancefloor all through Saturday Night Fever. Who can forget his entrance to the Bee Gees' 'Stayin' Alive' and then making 'You Should Be Dancing' a go-to disco number.
Among the more modern classics is 'A lovely night' from La La Land.
And who can forget the breathtaking finale of Step Up?
Flashdance delivered another epic finale to the song 'What a Feeling'.
And you can't mention Flashdance without its fellow 80s companion Footloose. There was so much angst in that warehouse.
Of course it always helps when you know the choreography, such as 'The Time Warp' in Rocky Horror Picture Show...
... Or 'Thriller' in 13 Going on 30.
For something a bit more seasonal there's 'Jingle Bell Rock' from Mean Girls.
Last but not least, there's the dance finale in Napoleon Dynamite. Many have tried to recreate it, but no one has quite the moves - or ingenious comic timing - of Jon Heder.