Audi has held on to the top spot in the Viral Video Chart for the second week running after its Spock vs Spock challenge racked up almost 200,000 social media shares.
Elsewhere on the chart, there's a distinct mum theme (last Sunday was Mother's Day in the US) with both Procter & Gamble and Google scoring high new entries with praise for mums, and a less cheery message from Greenpeace which takes aim at Coke.
Perennial viral chart favourites Red Bull are also back this week with a new high-octane racing video showing 'Mad Mike' drifting around New Zealand.
The charts are compiled with the Viral Ad Network and are based on the number of shares each video has received on social media over the last seven days.