Billboard named Baby Boy by Beyonce & Sean Paul (recorded in 2003) #8 in their Top 40 Duets of All Time list:
Whether on her own ("Irreplaceable," "Single Ladies (Put a Ring on It)"); in pairings ("Beautiful Liar," with Shakira, "Telephone," with Lady Gaga); or, in the trio Destiny's Child ("Bills, Bills, Bills," "Say My Name"), Beyonce = Hot 100 hit-making. This duet marked the second of her five No. 1s since 2003 as a solo artist, following four toppers in Destiny's Child in 1999-2001. Paul capped the Hot 100 once before this leader, with "Get Busy" (three weeks, 2003), and once after, with "Temperature" (one week, 2006).
See the complete list here.