With his World Championship victory he was up to number 6 in the rankings for 2006/2007, then his highest ever position. This is a remarkable turn-around, for at one point in the 2005/2006 season he looked in danger of plummeting down the rankings.
Dott achieved his first ranking tournament victory at the 2006 World Snooker Championship; he was previously runner-up in the 1999 Regal Scottish Open, the 2001 British Open, the 2004 World Championship and the 2005 Malta Cup. He has never lost in the quarter-finals or semi-finals in the World Championship
He scored his only competitive 147 break in the 1999 British Open.
Dott faced Peter Ebdon in the final for the £200,000 prize. He began the last session of the match leading 15-7, but Ebdon won six successive frames to reduce his deficit to two frames. Dott eventually won by 18 frames to 14, after winning some vital frames with marvellous clearances. It was the longest final ever and the latest to finish of all time. The previous record holder was the classic final frame last black ball finish 1985 final between Englishman Steve Davis and Irishman Dennis Taylor, which finished at 12:19 a.m. (GMT). The Dott-Ebdon match finished half an hour later, this despite featuring three fewer frames, reflecting the slow overall pace of the match— the average frame length was so high that both afternoon sessions only had six frames, instead of the usual eight. Moreover, at just over 74 minutes, the 27th frame was the longest in the history of the World Championship, even beating the 70 minute mark of the previous record set by Canadian Cliff Thorburn and Welshman Doug Mountjoy, two players of the 1980s not known for being quick either.
2007/2008 was more of a struggle for the diminutive Scot, who described his late-2007 form as "hopeless... nowhere near to playing a good enough standard" He reached the semi-finals of the season-opening Shanghai Masters, but then won no further matches that season; a run of 12 consecutive defeats, including all 5 group games in the Grand Prix, started from October 2007 onwards. In the UK Championship he was eliminated in the first round, 7-9, by unseeded Dave Harold, while in the Masters he lost 5-6 to eventual runner-up Stephen Lee for the third successive year Another first-round elimination followed in the Malta Cup, this time to Mark J. Williams. In the Welsh Open he lost his opening match once again, 4-5 to Michael Judge. In frame 7 he missed the pack completely with his break-off, and also failed to hit the bunch on his next shot. He announced that he could miss out on the 2008 World Championship, due to personal reasons, and according to his manager he had been suffering from depression.. However, Dott did eventually participate in the tournament, but was eliminated in the first round yet again for the second year in a row, losing 7-10 to Joe Perry, subsequently sliding to #13 in the new world rankings, and he finished the season outside the top 32 on the one-year rankings.
He supports Rangers and paraded his World Championship trophy at Ibrox, their home ground, during half-time of Rangers' final league match against Hearts on 7 May, 2006. His favourite films are The Godfather and Goodfellas , he has played online poker, and is teetotal.