The 2006-07 campaign delivered a glorious domestic double for Celtic, with The Bhoys clinching the Scottish Premier League title by 12 points and winning the Scottish Cup. Under the charge of Gordon Strachan, the league title was dramatically secured by Shunsuke Nakamura's spectacular, injury-time free-kick against Kilmarnock. Spearheading the league attack was the powerful forward Jan Vennegoor of Hesselink, whose 13 goals proved vital. The season was also immortalized by a historic run to the UEFA Champions League Round of 16 for the first time, where they took eventual winners AC Milan to extra time. It was a triumphant year that cemented the club's domestic dominance and remains a defining chapter in the legacy of The Bhoys.. The 2007-08 campaign delivered a thrilling, dramatic three-in-a-row Scottish Premier League title for Celtic, the first time achieving that feat since the legendary Jock Stein era. The championship was clinched on the final day, as The Bhoys' crucial 1-0 win against Dundee United, secured by a decisive Jan Vennegoor of Hesselink header, pushed them past rivals Rangers. Leading the charge for a season dedicated to the memory of recently departed coach Tommy Burns was the prolific forward Scott McDonald, whose 25 league goals earned him the SPL Golden Boot. This hard-fought triumph, following a late surge of seven consecutive victories, cemented the club's dominance and remains a defining chapter in the club's modern history.