Table: episodes_table_30
Columns: episode
first_broadcast
seans_team
jasons_team
scores

Question: Name all of Jason's teams that appeared on episode 6x02?
SQL: SELECT "jasons_team" FROM episodes_table_30 WHERE "episode" = '6x02'

Question: In how many episodes were Vanessa Feltz and Lee Mack the team for Sean? 
SQL: SELECT COUNT("episode") FROM episodes_table_30 WHERE "seans_team" = 'Vanessa Feltz and Lee Mack'

Question: Name the episode(s) that featured Duncan James and Johnny Vegas as Jason's team.
SQL: SELECT "episode" FROM episodes_table_30 WHERE "jasons_team" = 'Duncan James and Johnny Vegas'