7 sub atomic particles

1. Tau Neutrinos
2. Charm Quarks
3. Gluons
4. Gravitons
5. Photons
6. W Bosons
7. Muons

7 lesser known Muppets

1. Lew Zealand
2. Dr Julius Strangepork
3. Marvin Suggs
4. Mildred Huxtetter
5. Sweetums
6. Link Hogthrob
7. Foo-Foo

7 19th Century Chefs

1. Auguste Escoffier
2. Antoine Beauvilliers
3. Urbain Dubois
4. Charles Ranhofer
5. Alexis Soyer
6. Antonin Carême
7. Joseph Favre

7 buildings by Christopher Wren

1. Sheldonian Theatre - Oxford
2. St Paul's Cathedral - London
3. Temple Bar - London
4. Trinity College Library - Cambridge
5. Marlborough House - London
6. St Bride's Church - London
7. Hampton Court Palace - London

7 types of pastry

1. Puff Pastry
2. Choux Pastry
3. Filo Pastry
4. Suet Crust Pastry
5. Shortcrust Pastry
6. Flaky Pastry
7. Pate Sucree Pastry

7 questions we got right in this week's University Challenge

1. Mr McGreggor
2. Ectopic
3. Cane Toad
4. Junction
5. Escape Velocity
6. North and South Korea
7. 404

7 sukoku variants

1. Consecutive Sudoku
2. Samurai
3. Sohei
4. Hexudoku
5. Killer
6. Kakuro
7. Toroidal Sudoku