Grease a springform pan and set aside.
In a food processor combine cookies, melted butter and Bailey's and pulse until crushed and well mixed.
Press mixture into bottom and slightly up the sides of prepared pan.
Place in freezer for 30 minutes.
In a large bowl, cream together sugar and cream cheese until fluffy.
Add 1/4 cup of Bailey's and beat until incorporated.
In a microwave, heat 6 ounces of chocolate chips for 1 minute, stir and repeat until melted.
Add melted chocolate to cream cheese mixture and beat until incorporated.
In a separate bowl, whip 16 ounces of whipping cream until fluffy.
Fold cream cheese mixture into whipped cream.
Pour/spread mixture into prepared springform pan over crust.
Freeze for 3-4 hours.
Heat 1/4 cup of heavy cream in the microwave until very hot but not boiling.
Add chocolate chips and stir until chocolate is melted and the mixture is smooth.
Add 2 tablespoons of Bailey's and stir until blended.
Allow mixture to cool to just warm before drizzling over cheesecake.