Once again, Dave Grohl unintentionally proves he's the best dad ever. He and his daughter, Violet (who is already 15 years old. She was born in 2006. I can't handle this information so I must move on for my own mental health), covered 'Nausea' from the band X and, naturally, absolutely crushed it. There aren't many celebrity dynasties that I enjoy. But a Grohl dynasty? The one we NEED. It will bring the country together. It will heal our wounds. It will clear our skin. It will make your hair grow 4 full inches.