The first episode of the UK series Dragon's Den was listed simply as “Episode 1.”
The programme premiered in Britain in 2005, introducing the format of entrepreneurs seeking investment from a panel of wealthy business people. The opening episode established the series' central conventions: entrepreneurs make a valuation, request a specific investment and negotiate over equity.
Unlike some entertainment programmes, Dragon's Den episode listings generally use straightforward episode numbering rather than a distinctive title for every instalment. That makes the canonical answer a listing label rather than a memorable subtitle.
This is different from asking when the series premiered or which broadcaster carried it. The British programme began in 2005 on BBC Two, but the episode title itself is recorded as “Episode 1.” The answer therefore identifies the episode label, not the launch year or channel.