I'm just looking at if their are any other American TV shows that I haven't quite heard about yet.
Please post your shows in the comments below!
I highly recommend BBC version ( http://www.bbc.co.uk/dragonsden/ ) as it deals quite a bit with valuation and is more serious. After success of BBC Dragons Den there have been few BBC offshots: Dragons Den Online (shorter pitches); Dragons Den - What happened later (recap of pitches and where entrepreneurs are year later); Dragons Den Around the world (recap of how other tv stations do Dragons Den). Less than half of the pitches get any traction.
After watching the UK I found Canadian edition (available to watch at cbc.ca) a bit over the top. The valuation and money exchanged were much higher. The cool think in Canadian edition is Bret, who is either a VC or philanthropist depending on his mood. CBC also produced couple episodes showing how dragons grew to the riches that they have now. What were their roots, and where did they start. Less than half of the pitches get any traction.
Shark Tank in comparison is crazy as it tries to show: American Dream can be made with a little help of Seed money. Most pitches are good, no fumbles, no crazy valuations, no crazy people. As if 75% to 100% of pitches were made to deals.
I can't say much on Irish or Australian Dragon's Den, those are quite tricky to find. I saw parts of Australian Dragon's Den on a special BBC edition of Dragon's Den around the world.
Being of Slavic origins I tried watching the Czech edition (called 'd den' http://www.ceskatelevize.cz/program/dend click videoarchive) but found business terms tricker to grasp. The new season comes with subtitles so I will renew an attempt to watch it.
Poland started doing own dragons den this spring. There are clips of it on youtube as part of original marketing. From what I read, the show was a hit, and they want another season within next 6 months.
It blows shark tank out of the water, much more business stuff then sappy stories.
It also features Kevin & Robert from shark tank (who were/are originally dragons before sharks)
We only have Shark tank here.
You would definitely like Pitchmen.