Here is a concise summary of the text:
**Title:** Unscripted Moments in Stranger Things Season 4 (with some Season 3 gems)
**Summary:** This article highlights 12 improvised moments and mishaps from Stranger Things Season 4 (and a few from Season 3) that made it to the final cut. These include:
1. **Unscripted Kiss**: Winona Ryder and David Harbour's reunion kiss
2. **Tearjerker Ad-Lib**: Caleb McLaughlin's emotional improvised line
3. **Mike's Confession**: Finn Wolfhard's added "You're my superhero" line
4. **Comedic Improv**: Joseph Quinn's humorous ad-libs
5. **Van Stunt Gone Right**: Charlie Heaton's unplanned dive through a van window
6. **Argyle's Van Antics**: Improvised banter between Charlie Heaton and Eduardo Franco
7. **Emotional Goodbye**: Joseph Quinn's improvised "I love you, man" line
8. **Mistake Turned Magic**: A botched stunt kept in the final cut for its cool factor
9. **Behind-the-Scenes Save**: A stuntman's light-hearted improv during a frustrating shoot
10. **Heartbreaking Slip-Up**: Caleb McLaughlin's exhausted, yet authentic, reaction
11. **Millie's Real Collapse**: Exhaustion led to a genuine collapse in a Season 3 scene
12. **Mike's Rambling Confession**: Finn Wolfhard's improvised heart-to-heart with Millie Bobby Brown in Season 3.
Here are the key facts extracted from the text, numbered and in short sentences:
1. **Unscripted Kiss**: Winona Ryder and David Harbour's kiss in Season 4 was unscripted, added by the actors on the day of filming.
2. **Improv by Caleb McLaughlin**: Caleb McLaughlin (Lucas) improvised the line "Erica, help!" in a intense sequence where Max's character is severely injured.
3. **Finn Wolfhard's Monologue**: Finn Wolfhard (Mike) was allowed to add his own lines to a monologue, resulting in the "You're my superhero" line.
4. **Joseph Quinn's Improv**: Joseph Quinn (Eddie) improvised the line "Don't you big boy" at Steve in the campervan.
5. **Charlie Heaton's Improv**: Charlie Heaton (Jonathan) improvised diving through a van's window in a scene with Eduardo Franco (Argyle).
6. **Heaton and Franco's Chemistry**: Charlie Heaton and Eduardo Franco spent a week filming a scene, improvising lines off each other.
7. **Joseph Quinn's Heartfelt Line**: Joseph Quinn improvised the line "I love you, man" to Gaten Matarazzo (Dustin), who responded with "I love you too".
8. **Mistake Turned into a Shot**: A mistake during a demogorgon scene (where a bar collapses) was kept in the final cut due to its dramatic effect.
9. **Stuntman's Improv**: During a shootout scene, a stuntman lightened the mood with an improv line after a mistake ruined the take.
10. **Caleb McLaughlin's Exhaustion**: Caleb McLaughlin was so exhausted after a long day of filming that his scream in a scene was genuine, but he mistakenly yelled "Max" instead of "No".
11. **Millie Bobby Brown's Real Collapse**: Millie Bobby Brown was so exhausted after filming a fight scene that her collapse into Finn Wolfhard's arms was real.
12. **Finn Wolfhard's Improvised Heart-to-Heart**: Finn Wolfhard improvised a heart-to-heart scene with Millie Bobby Brown in Season 3, including his rambling attempt to say "I love you".