Al Roker is grateful to those who donated blood to him during his past health issues - especially Today coanchor Craig Melvin. "I'm a living example of being a recipient of those donations during my health issues," Roker, 70, said on the Today show on Monday, July 28, after Melvin, 46, gave blood live on-air to encourage others to follow in his footsteps. Melvin, who took over Hoda Kotb's position on the Today show's early hours in January, agreed with Roker, noting that he "came over" to Roker's place and "gave" him blood before.