Can you tell the difference between Danish and Swedish?

The millionaire guy (Jorgen?) was Swedish and spoke as such. It can be hard sometimes to understand each other, but it's easier when you get used to it (Danes and Swedes that is).

Well the thing is, as you rightly mention FlyByDay, that scandinavians do understand each other. At least if they do an efford. The languages are very simular, yet it sounds quite different, well...to scandinavians at least.
Its not like all danes understand all swedes or vice versa, but the backbone of the languages are the same, since they've developed from a common past. Scandinavia have a long history of territorial fueds and wars between mainly danish and swedish Kings from back in the day, when Monarchs were ruling their land with swords and iron fists.

So somewhat simular but definately not the same. For eksample if I was to watch a swedish film(im danish!), it had to be subbed. I might be able understand alot of it, maybe even most of it if I tried, depending on pace and dialect in the film, but there would be a great change that i would miss out on important details.
Of course this perspective varies quite alot, depending on preferences of the individuel. Some people would have a hard time understanding a swedish guy asking for directions, while others could lead a complex conversation.

Also same words can have different meaning. Like for instance the danish word "glas" meaning glass, like in a window. The swedish word "glass" means ice-cream!(!?) Ice-cream is in danish called "is".
Understand how it can be quite confusing also??

In dansih cinema as well as swedish, it is somewhat common to use actors from the sister-country. The main reason is simply to get the best actors awailable. Denmark have a population of 5,4 million, and capital Copenhagen - where 95% of international sucessfull danish cinema is produced - has apr. 1 mio. citezens in large scale. Thats not much for a productive cinographic community with higher and higher sandards.
But also, since the two countries are so close and simular, with a common history and all, alot of danes lives and/or works in sweden and vice versa. And most danes i would say, knows a couple of swedes through friends or family or whatever...So of course this "fenomenon" is not ONLY in scandinavian cinema as a "lack of good labour" but very much reflects the society in which we live also.

I didn't know that Jorgen was Swedish until I read in a German review of the movie that he plays a detective in a popular TV serial. I speak a little German, but no, I did not know that Swedish was spoken in the movie. In fact I checked before the movie started just to make sure it was the movie I thought it was, and coincidentally for the languages as well. I knew the movie as 'Nach der Hochzeit' and it was screened as 'After the wedding' on the BBC. So I found out while checking on the movie title, that was in Danish, English and Hindi & missed Swedish for some strange, unknown reason. If I only knew, I would have tried harder to distinguish the two, not that I think I would be able to.

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I am Danish & this is probably true to the ears of many people; Danish is harsh while Swedish is more like singing - hence Swedish does sound more pleasant.

I am half-Swedish, though I was born and raised in Munich. So my Swedish is not as good as I wish it was. Nevertheless I enjoy watching skandinavian movies since so many films with great quality come from these countries. (Especially from Denmark!) I had a Danish girlfriend who showed me "After the wedding" and I watched it with Swedish subtitles. And that was a funny sensation because I really needed the subtitles most of the time because I only get around 20% of what is spoken in Danish. But when Jörgen (Rolf Lassgård, a very popular Swedish actor) speaks, the subtitles were gone. So it was like reading-listening-reading-listening and so on. Another movie with a thing like this was "Old Men in New Cars" (highly recommended!)
It is a common proverb in Sweden that Danish is like talking Swedish with a hot potato in your mouth. And it is really like that (even in parts of southern Sweden like Malmö, where my mother is from).
Anyway, my experience is that in general Danes understand Swedish better than vice versa. But there are of course exceptions.