There are at least 7 different bands with the name Thinktank.

1) Minimal techno project by Colvin Cruickshank and Shaleph John O'Neill.
2) Another alias of progressive house artist Luis Duran.
3) American drum'n'bass group by G.Khanna & B.Wilkin.
4) Alternative Rock band from the UK who released one album in 2002 "Here is the Moment".
5) A hardcore band from the US.
6) A touhou rock band formed by くみちょ, M.shimon, supply.
7) An Australian 'Christian' emo/rock band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.