I've only ever seen 4 Raquel Welch movies:
Fantastic Voyage - Fun science fantasy, cool retro FX
One Million Years BC - Even better FX in this one, from Ray Harryhausen. As a movie it's so unapologetically dumb that it's endearing, although I liked When Dinosaurs Ruled the Earth even more.
Bandalero - It's rare that I dislike anything with Jimmy Stewart in it but this is the kind of post-classic-Hollywood-but-not-new-Hollywood movie that just makes me feel like I'm watching the Western genre have an embarrassing identity crisis. It's kind of depressing.
3 Musketeers - Pretty good, but I don't think this manages anything like the resonance of Lester's better action adventure movies, Robin and Marian and Superman II.