Related Clues:

• Argus's hundred
• They're all in your head
• Colon in many an emoticon
• Motel posting
• Oil and gas, for two
• Buds on spuds
• Glimpses
• Choice meat cuts
• 'Mona Lisa' features that 'follow' the viewer
• Determines value
• Argus had 100
• Hotel postings
• "Windows to the soul"
• Taxi posting
• View-finders?