Possible Clues:

• General level
• It's usual this
• 'Cheers' habituŽ
• The usual standard
• Cliff's "Cheers" cohort
• The usual - selection from gin or martini
• Cliff's sidekick on "Cheers"
• Bethune, to his friends
• 100, IQ-wise (with ''the'')
• Standard considered to be representative