Pair Natalie Portman with a star from That 70’s Show and what do you get? A Top Ten film.

No Strings Attached – last weekend’s only new wide release – topped the box office with a $19.6 million bow. The film, which features Portman and Ashton Kutcher, gave Natalie – someone who has avoided romantic comedies -- her best debut since 2006’s V for Vendetta.

As for Black Swan, Portman’s film with 70’s Show actress Mila Kunis – that film slipped one notch down to sixth place over the weekend. You can expect a possible boost for the thriller after Oscar nominations are announced Tuesday morning.

1. No Strings Attached, Paramount, $19,652,921 (avg. $6512)
2. The Green Hornet, Sony, $17,677,565 (avg. $4932)
3. The Dilemma, Universal, $9,108,890 (avg. $3095)
4. The King's Speech, Weinstein Co., $7,854,910 (avg. $4676)
5. True Grit, Paramount, $7,330,092 (avg. $2116)
6. Black Swan, Fox Searchlight, $5,869,744 (avg. $2439)
7. Little Fockers, Universal, $4,320,090 (avg. $1450)
8. The Fighter, Paramount, $4,164,504 (avg. $1831)
9. Yogi Bear, Warner Bros., $3,819,395 (avg. $1522)
10. Tron: Legacy, Disney, $3,647,121 (avg. $1807)

(You can review last week's numbers here.)